Exhibit 99.1 SEACOR Marine Holdings Inc. SMHI LISTED Investor Presentation NYSE July 2, 2024

Forward-Looking Statements Forward-Looking Statements discussed in this release as well as in other reports, materials and oral statements that SEACOR Marine Holdings Inc. (“SEACOR Marine” or the “Company”) releases from time to time to the public constitute “forward-looking statements” within the meaning of the Private Securities Litigation Reform Act of 1995. Generally, words such as “anticipate,” “estimate,” “expect,” “project,” “intend,” “believe,” “plan,” “target,” “forecast” and similar expressions are intended to identify forward-looking statements and includes the information on Slide 26. Such forward- looking statements concern management's expectations, strategic objectives, business prospects, anticipated economic performance and financial condition and other similar matters. Forward- looking statements are inherently uncertain and subject to a variety of assumptions, risks and uncertainties such as the completion of our financial close process for the quarter, that could cause actual results to differ materially from those anticipated or expected by the management of the Company. These statements are not guarantees of future performance and actual events or results may differ significantly from these statements. Actual events or results are subject to significant known and unknown risks, uncertainties and other important factors, many of which are beyond the Company's control. It should be understood that it is not possible to predict or identify all such factors. Investors and analysts should not place undue reliance on forward-looking statements. Forward-looking statements speak only as of the date of the document in which they are made. The Company disclaims any obligation or undertaking to provide any updates or revisions to any forward-looking statement to reflect any change in the Company's expectations or any change in events, conditions or circumstances on which the forward-looking statement is based, except as required by law. It is advisable, however, to consult any further disclosures the Company makes on related subjects in its filings with the U.S. Securities and Exchange Commission, including Annual Reports on Form 10-K, Quarterly Reports on Form 10-Q and Current Reports on Form 8-K (if any). These statements constitute the Company's cautionary statements under the Private Securities Litigation Reform Act of 1995. Non-GAAP Financial Measures This presentation includes certain non-GAAP financial measures. Direct Vessel Profit (defined as operating revenues less operating costs and expenses including major repairs and drydocking expenses, “DVP”), when applied to individual vessels, fleet categories or the combined fleet. DVP is a critical financial measure used by the Company to analyze and compare the operating performance of its individual vessels, fleet categories, regions and combined fleet, without regard to financing decisions (depreciation for owned vessels vs. leased-in expense for leased-in vessels). DVP is also useful when comparing the Company’s fleet performance against those of our competitors who may have differing fleet financing structures. DVP has material limitations as an analytical tool in that it does not reflect all of the costs associated with the ownership and operation of our fleet, and it should not be considered in isolation or used as a substitute for our results as reported under GAAP. Adjusted EBITDA is defined as DVP less general and administrative expenses and lease expenses. We believe that the presentation of Adjusted EBITDA provides useful information to investors and management uses it to assess our on-going operations. Our use of Adjusted EBITDA should not be viewed as an alternative to measures calculated in accordance with GAAP. Adjusted EBITDA has limitations as analytical tool such as: (i) Adjusted EBITDA does not reflect the impact of earnings or charges that we consider not to be indicative of our on-going operations, (ii) Adjusted EBITDA does not reflect interest and income tax expense; and (iii) other companies, including other companies in our industry, may calculate Adjusted EBITDA differently than we do. Net Debt is defined as total debt (the most comparable GAAP measure, calculated as long-term debt plus current portion of long-term debt excluding discount and issuance costs) less cash and cash equivalents (including restricted cash). We believe that the presentation of Net Debt provides useful information to investors and management uses it to compare total debt less cash and cash equivalents across periods on a consistent basis. Reconciliation for each of these non-GAAP measures are included as an appendix to this presentation. seacormarine.com 2

1. Company Overview seacormarine.com 3

SEACOR Marine – Global OSV Owner with Modern Fleet Company Overview Global Presence • Leading provider of marine and support transportation services to offshore energy facilities worldwide with one of the youngest fleets in the industry Middle East & Asia (1) • Listed on the NYSE (ticker: SMHI) with a market capitalization of $390.3M 16 vessels West Africa & Europe • Operates and manages a diverse fleet of 56 offshore support vessels (“OSVs”) that 20 vessels 10 vessels provides crew transportation, supply, accommodation and maintenance support United States 10 vessels Latin America • Global footprint with presence in all major offshore basins, serving a diverse range of customers in the oil and gas and offshore wind sectors • Adopter of leading-edge technology (hybrid power, walk-to-work, etc.) to enhance sustainable operations SEACOR Marine (3) (3) Company Highlights Fleet Composition Region / Asset Type PSV FSV Liftboat AHTS United States 2 3 5 - Contract Backlog Stewards of Capital and Energy Efficiency and Latin America 7 2 1 - > $440.0M (incl. options) Operational Excellence CO Emission Reduction 2 Africa & Europe 7 10 - 3 Cash & Cash Equivalents• Disciplined capital• 7 hybrid PSVs Middle East & Asia 5 8 2 1 $62.2M Total 21 23 8 4 • Continued deleveraging• 4 hybrid systems ordered (2) Net Debt • Safety first culture• Offshore wind support $283.3M 56 Vessels – Average Age of 9.9 Years (1) Bloomberg, as of market close on July 2, 2024. (2) Net Debt is a non-GAAP financial measure. See Slide 2 for a discussion of Net Debt and the Appendix to this presentation for a reconciliation to GAAP. seacormarine.com 4 (3) Company Highlights and Fleet Composition as of March 31, 2024. Fleet count includes 1 managed vessel and 1 leased-in vessel as of March 31, 2024.

High-Quality and Youngest Fleet of any Peer Competitor Platform Supply Vessels (PSV) Work Scope • Shallow water and deepwater activities • 21 vessels • Delivery of cargo, drilling fluids, fuel and water to rigs • Average age of 6.8 years 2 • Construction, maintenance support, standby, accommodation • 11 vessels with deck space > 800m • Offshore wind support • 7 with hybrid power, 4 additional hybrid systems on order Fast Support Vessels (FSV) • 23 vessels (1 managed)• High-speed cargo transport to offshore facilities • Average age of 10.8 years• Transport of personnel at high-speed and comfort • Aluminum monohulls or catamarans, up to 150 passengers• Support drilling and production operations • DP-2 or DP-3, 30-40 knots speed• Emergency response services Liftboats • 8 vessels• Self-elevating, self-propelled work platforms • Average age of 13.0 years (9.3 years for premium liftboats)• Well workover, maintenance and well production enhancement • Working water depth up to 275 feet• Decommissioning, plug and abandonment • Accommodation up to 150 berths• Offshore wind support in the U.S. (Jones Act) Anchor Handling Tug & Supply (AHTS) • 4 vessels (1 leased-in)• Offshore drilling support by towing, positioning, mooring rigs • Average age of 15.0 years• Carry and launch equipment such as remote operated vehicles • 7,000 to 11,000 BHP, 120t + Bollard Pull• Transportation of drilling fluids and bulk products • DP-2• Emergency response services seacormarine.com 5

Revenue Diversification With a Reputable Customer Base (1) (2) 2023 Total Revenue Main Customers High-Quality Customers % of FY 2023 Customer Name Total Revenue 6% 70% 0% ExxonMobil 17% United States United States $61M Saudi Aramco 15% $60M (primarily Gulf of Mexico) (primarily Gulf of Mexico) 10% Azule Energy 15% (BP / ENI Joint Venture) 14% Ørsted 6% PSV FSV Liftboat AHTS Other Total Chevron 6% QatarEnergy 4% MexMar 3% APA Corporation 3% 4% 1% 15% 0% 80% Fugro 2% $44M Latin America Latin America $59M Van Oord 2% PSV FSV Liftboat AHTS Other Total Top 10 customers account for 73% of FY 2023 Revenues (3) 0% 10% Total Revenue by Type 48% 0% $60M Africa & Europe Africa & Europe 42% $90M Other 5% Offshore Wind PSV FSV Liftboat AHTS Other Total 10% Independents IOCs 10% 42% 0% 2% 48% $53M 31% Offshore Contractors Middle East & Asia Middle East & Asia $71M NOCs 12% 19% 22% PSV FSV Liftboat AHTS Other Total (1) For the twelve months ended December 31, 2023. For continuing operations. Numbers in percentage of Total Revenue per respective geography. (2) Main Customers may be direct or indirect end-users. seacormarine.com 6 (3) For FY 2023.

2. Market Outlook seacormarine.com 7

Strong Industry Fundamentals – Increased Demand Drivers Growing Global Offshore Upstream Capital Expenditures Robust Global Offshore Project Sanctioning Pipeline 242 $250B $180B 171 234 225 158 156 214 $160B 211 205 195 $200B 134 183 $140B 131 131 130 165 120 136 $120B 113 101 106 129 101 88 101 $150B 139 139 98 99 109 $100B 66 73 69 107 83 81 81 78 $80B 74 71 72 $100B 55 $60B 49 45 112 114 $40B 110 106 104 $50B 97 70 65 65 85 84 61 61 59 76 68 50 67 44 $20B 38 35 33 $0B $0B 2020 2021 2022 2023 2024E 2025E 2026E 2027E 2028E 2029E 2030E 2020 2021 2022 2023 2024E 2025E 2026E 2027E 2028E 2029E 2030E Shelf Deepwater Shelf Deepwater Source: Rystad Energy. seacormarine.com 8 8

Sustained Growth in OSV Demand – Tight Supply / Demand Balance Growing OSV Demand Comments Active > PSV 1,000+ DWT & AHTS 4,000+ BHP• OSV demand progress was evident on a global basis in 2023, with tangible improvement in all regional markets 3,000 ~13% • PSV demand has improved at a faster rate than other asset classes against the backdrop of higher activity in the Gulf of 2,500 Mexico, Brazil and West Africa (the “Golden Triangle”) • Development of new areas requiring more vessels (e.g. Guyana, 2,000 Suriname, Namibia, Mozambique) • Total OSV demand is expected to continue its growth in the 3,033 1,500 2,898 coming years with limited additional supply, further tightening the 2,737 2,746 2,648 2,511 2,500 chartering market 2,439 2,259 2,230 2,208 2,022 2,032 1,000 2,012 • From 2023 to 2026, OSV demand is expected to increase by ~13% 500 - 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024E 2025E 2026E Active OSVs Forecast Source: Clarksons Research Services. seacormarine.com 9

Supply Side Constraints Remain Aging Stacked Fleet Limited Supply 1,400 70% 250 12% 571 stacked OSVs per FYE 2023 Total OSV Fleet of 3,431 vessels per FYE 2023 10% 1,200 60% 200 8% 1,000 50% 150 6% 800 40% 100 4% 600 30% 50 2% 400 20% 0 0% 200 10% -50 -2% 0 0% -100 -4% 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 AHTS Attrition & Conversion PSV Attrition & Conversion Stacked < 1 Year Stacked 1-2 Years AHTS Deliveries PSV Deliveries Stacked 2-3 Years Stacked > 3 Years % of Fleet Stacked > 3 Years (rhs) % of OSV Fleet Stacked (rhs) Fleet Growth (rhs) Limited orderbook, constrained financing and continued development of local cabotage leads to a favorable supply and demand balance Source: Clarksons Research Services. seacormarine.com 10 Number of Vessels Number of Vessels

Tight Supply / Demand Balance Leads to Improved Pricing and Utilization Global PSV Average Day Rates Global PSV Average Utilization $45,000 100% $40,000 90% $35,000 $30,000 80% $25,000 70% $20,000 $15,000 60% $10,000 50% $5,000 $0 40% PSV 3,200 DWT Time Charter Rate PSV 4,000 DWT Time Charter Rate PSV 3,000 - 4,000dwt PSV 4,000dwt + Contracting terms and duration improve in addition to PSV average day rates and utilization Source: Clarksons Research Services. seacormarine.com 11

3. Financials seacormarine.com 12

Financial Highlights FY 2023 LTM (through Q1 2024) FY 2022 (1) Fleet Count / Average Age 60 / 8.6 years 58 / 9.4 years 56 / 9.9 years Fleet Average Utilization 75% 71% 75% $12,673 $17,490 Fleet Average Day Rate $16,375 281.1M Revenues $217.3M $279.5M (2) Direct Vessel Profit $111.8M $45.3M $119.9M (3) Adjusted EBITDA $0.6M $67.9M $59.9M Q1 2024 saw continued growth in Fleet Average Day Rate, reaching $19,042 in Q1 2024, offset by lower utilization of 62% driven by seasonality, repositioning of vessels and higher maintenance activity (1) Fleet Count and Average Age includes 2 managed vessels and 3 leased-in vessels in 2022, 3 managed vessels and 1 leased-in vessel in 2023, 1 managed vessel and 1 leased-in vessel in Q1 2024. (2) Direct Vessel Profit is a non-GAAP financial measure. See Slide 2 for a discussion of Direct Vessel Profit and the Appendix to this presentation for a reconciliation to GAAP. seacormarine.com 13 (3) Adjusted EBITDA is a non-GAAP financial measure. See Slide 2 for a discussion of Adjusted EBITDA and the Appendix to this presentation for a reconciliation to GAAP.

Sustained Growth in Total Revenue and Direct Vessel Profit (1) Total Revenue, DVP & DVP Margin Comments 50% • Improving day rates and utilization leading to sustained revenue growth over the last $280M 43% four years 40% $240M 36% 40% $200M 30%• DVP growth exceeding 150% year-on-year from 2022 to 2023, and establishing a 25% $160M baseline over LTM through Q1 2024 despite lower activity during the winter months 21% $280M $281M $120M 20% $217M $171M $80M $142M • Improving DVP margin, highlighting operating leverage driven by increasing day rates 10% $120M $112M $40M and utilization $51M $45M $44M $0M 0% 2020 2021 2022 2023 LTM through Q1 2024 • Continued deleveraging of the balance sheet (~$28M p.a.), coupled with a comfortable Total Revenue DVP DVP Margin liquidity position Total Debt, Cash & Cash Equivalents & Equity Ratio • Maintaining adequate capitalization with an equity ratio of 47% in Q1 2024 $600M 60% 49% 48% 47% Direct Vessel Profit (“DVP”) is defined as operating revenues less operating costs and 47% $500M 50% expenses (including major repairs and drydocking expenses) and is a critical financial 39% $400M 40% measure used by SMHI to analyze and compare the operating performance of its business segments without regard to financing (Adjusted EBITDA is DVP less SG&A and Lease $300M 30% $522M Expenses). $200M $401M 20% $364M $353M $345M $84M $62M $100M 10% $41M $43M $36M Contrary to most peer companies, SMHI fully expenses maintenance and drydocking costs, $0M 0% 2020 2021 2022 2023 Q1 2024 resulting in reduced DVP and Adjusted EBITDA figures. Total Debt Cash & Cash Equivalents Equity Ratio (1) Direct Vessel Profit is a non-GAAP financial measure. See Slide 2 for a discussion of Direct Vessel Profit and the Appendix to this presentation for a reconciliation to GAAP. seacormarine.com 14

Acceleration in Day Rates and Utilization Across Asset Classes Recently Achieved Day Rates Fleet DVP Breakdown LTM Asset Class Day Rate FY 2022 FY 2023 through Q1 2024 2 PSV (> 800 m deck space) $35,300 PSV 2 PSV (< 700 m deck space) $17,000 Day Rate $13,246 $18,031 $18,990 FSV (Catamarans) $23,000 Utilization 76% 77% 72% (1) FSV $19,000 PSV - Direct Vessel Profit $11.4M $39.5M $37.3M Liftboat (Premium) $82,000 FSV Liftboat $38,000 Day Rate $9,425 $11,273 $11,585 Utilization 85% 84% 79% AHTS $11,500 (1) FSV - Direct Vessel Profit $20.4M $34.2M $28.0M Liftboat Comments Day Rate $27,010 $37,523 $42,283 Utilization 55% 50% 50%• Increased day rates from FY 2022 to FY 2023 across all asset classes, driven by PSVs, (1) FSVs and Liftboats Liftboat - Direct Vessel Profit $4.9M $43.5M $44.0M AHTS • Direct positive impact on Direct Vessel Profit, resulting in a growth of 164% year-on-year from 2022 to 2023 Day Rate $8,975 $9,201 $9,007 Utilization 69% 70% 68% • Recently achieved day rates by SEACOR Marine are significantly higher than average fleet (1) AHTS - Direct Vessel Profit $3.8M $0.4M $0.2M day rates for FY 2023, reflecting incremental repricing opportunities going forward (1) Miscellaneous - Direct Vessel Profit $4.8M $2.3M $2.3M • While activity dipped in Q1 2024 due to seasonality, repositioning of certain vessels and higher major repairs and drydocking activity, fleet day rates, utilization continue to be Average Fleet Day Rate $12,673 $16,375 $17,490 supportive Average Fleet Utilization 75% 75% 71% (1) Total - Direct Vessel Profit 45.3M $119.9M $111.8M (1) Direct Vessel Profit is a non-GAAP financial measure. See Slide 2 for a discussion of Direct Vessel Profit and the Appendix to this presentation for a reconciliation to GAAP. seacormarine.com 15

Illustrative Operating Leverage – Adjusted EBITDA Sensitivity The following information represents potential Annual Revenue and Adjusted EBITDA outcomes under different average fleet day rate and/or utilization environments, calculated assuming for these purposes: (i) our LTM through Q1 2024 Average Fleet Utilization of 71% and illustrative Fleet Utilization of 80%; (ii) our FY 2023 Bareboat Charter and Other Marine Services of $28.1M; (iii) our FY 2023 General & Administrative and Lease Expenses of $51.9M; and (iv) our FY 2023 Operating Expenses (including Major Repairs and Drydocking Expenses) of $159.7M. The following does not represent SEACOR Marine’s guidance or projections for potential results for 2024 or any other period and should not be relied on as such. Actual FY 2024 financial results may materially differ from prior periods and the information set forth below. Annual Revenue (in $M) 281 306 313 320 328 335 342 350 357 364 (1) Net Debt / Adjusted EBITDA 4.1x 3.0x 2.8x 2.6x 2.4x 2.3x 2.2x 2.1x 2.0x 1.9x $210M 195 ~10% increase in Day Rates from Q1 2024 187 179 $180M 170 162 154 153 146 145 $150M 138 138 71% Fleet Utilization 131 130 (LTM through Q1 2024) 123 116 $120M 109 101 80% Fleet Utilization 95 86 (Illustrative) $90M 69 Adjusted EBITDA 2023 $60M (75% Fleet Utilization) $30M $0M (2) $16,375 $19,042 $19,500 $20,000 $20,500 $21,000 $21,500 $22,000 $22,500 $23,000 Average Fleet Day Rate High operating leverage for any incremental percentage in fleet utilization and/or growth in day rates Note: Based on an average fleet of 56 vessels. (1) Net Debt and Adjusted EBITDA are non-GAAP financial measures. See Slide 2 for a discussion of Net Debt and Adjusted EBITDA and the Appendix to this presentation for a reconciliation to GAAP. seacormarine.com 16 (2) Average Fleet Day Rate in FY 2023. Annual Adjusted EBITDA

Illustrative Cash Flow Bridge The following does not represent SMHI’s guidance or projections for potential results for 2024 or any other period and should not be relied on as such. Actual financial results with respect to 2024 may materially differ from prior periods and the information set forth below. Annualized Pro-Forma Cash Flow Generation Based on Q1 2024 Average Day Rates $350M $306M Assumptions $300M • Revenue: based on Q1 2024 Average Fleet Peer companies typically capitalize Major Repairs & Drydocking Expenses over 2.5 years (3) Day Rate ($19,042) and LTM through Q1 $250M 126 2024 Average Fleet Utilization (71%) $200M• Operating Expenses: based on FY 2023 actuals ($126.2M) 7 26 $147M $150M • Repairs & Drydocking Expenses: based on FY 2023 actuals ($33.4M) 52 $95M $100M • SG&A & Lease Expenses: based on FY 11 $72M $11M 11 2023 actuals ($51.9M) 31 $50M • Capex: $11.2M for FY 2024 (reducing to 28 $13M $5.0M in FY 2025 and 0.2M in FY 2026) $0M • Cash Taxes: $2.8M per quarter (1) SG&A & Interest Revenue EBITDA Capex Cash Cash Flow Debt Free Cash Operating Repairs & DVP (2) Lease available for Expenses Expenses Drydocking Taxes Amortization Flow after Expenses Debt Service Debt Service Expenses (1) Direct Vessel Profit is a non-GAAP financial measure. See Slide 2 for a discussion of Direct Vessel Profit and the Appendix to this presentation for a reconciliation to GAAP. (2) Interest Expenses per current debt schedule and will reduce as debt amortizes. seacormarine.com 17 (3) Q1 2024 Average Fleet Utilization was 62%.

Sound Capital Structure Total Debt Maturity Profile Existing Debt Facilities (per Q1 2024) $152M $160M SEACOR Marine Foreign Holdings Inc. - due September 2028 $140M • Amount Outstanding: $115.9M $35M • Security: 27x OSVs (8x PSVs, 15x FSVs, 2x Liftboat, 2x AHTSs) $110M $120M• Pricing: 11.75% p.a. SEACOR Alpine LLC - due June 2028 $100M • Amount Outstanding: $25.2M • Security: 3x PSVs $80M • Pricing: 10.25% p.a. $90M $98M $60M SEACOR Delta Shipyard Financing - due 2028/2029 • Amount Outstanding: $66.4M $40M • Security: 8x PSVs • Pricing: LIBOR + 4.00% p.a. $20M $6M $28M $29M $27M $27M Sea-Cat Crewzer III - due July 2029 $12M $0M • Amount Outstanding: $13.0M 2024 2025 2026 2027 2028 2029• Security: 2x FSVs • Pricing: 2.76% p.a. Principal Instalments Balloon Guaranteed Notes Convertible Notes Fiscal Year End 2023 2024 2025 2026 2027 2028 2029 Convertible Notes - due July 2026 Total Debt Outstanding ($M) 353.0 324.7 296.1 143.6 116.5 6.2 0.0 • Amount Outstanding: $35.0M • Security: Unsecured • Pricing: 4.25% p.a. (Conversion price of $11.75 per share) Average Cost of (1) (2) Net Leverage DSCR Total LTV Fleet FMV Guaranteed Notes - due July 2026 Debt • Amount Outstanding: $90.0M • Security: Unsecured, Negative Pledge on 1x Liftboat (LB Robert) 4.1x 1.7x 9.2% 36% >$950.0M • Pricing: 8.00% Cash or 9.50% Hybrid (4.25% Cash + 5.25% PIK) (of which >$200.0M unencumbered) (1) Net Leverage is calculated as Net Debt per Q1 2024 divided by FY2023 Adjusted EBITDA. Net Leverage, Net Debt and Adjusted EBITDA are non-GAAP financial measures. See Slide 2 for a discussion of Net Debt and Adjusted EBITDA and the Appendix to this presentation for a reconciliation to GAAP. seacormarine.com 18 (2) Debt Service Coverage Ratio (“DSCR”) is calculated as FY 2023 Adjusted EBITDA divided by debt amortization plus interest expenses per FY2023. Unsecured Debt Secured Debt

Key Credit Highlights 1• Founded in 1989, SMHI is a leading provider of marine and support transportation services to offshore energy facilities worldwide • Proven steward of capital; only US listed public company in the OSV sector that did not go through a financial restructuring during the downturn Leading OSV (1) • Listed on the NYSE with a current market capitalization of $390.3M Owner and Operator • Owner/operator of 56 modern vessels with an average age of 9.9 years • Diverse customer base within offshore oil and natural gas and offshore wind markets 2• One of the youngest fleets in the industry, strong asset base with an estimated aggregate fair market value exceeding $900.0M • Diverse asset base providing industry-leading offshore solutions across the value chain to meet energy transition goals, ranging from drilling, production and Attractive maintenance, to plug and abandonment and decommissioning as well as offshore wind Fleet • Fleet actively employed by reputable counterparties, including National Oil Companies (Saudi Aramco), IOCs (ExxonMobil, Chevron, BP, TotalEnergies, ENI), Independents, Offshore Contractors and Offshore Wind Developers • Continued progress in average fleet utilization (75% in 2022 and 2023 vs. 66% in 2021) and day rates ($16,375 in 2023 vs. $12,673 in 2022 vs. $11,712 in 3 (2) (2) 2021) , and $19,042 average fleet day rate in Q1 2024 Robust Company • Q1 2024 utilization stood at 62% due to low seasonal utilization, and more importantly SEACOR Marine’s deliberate plans to conduct scheduled maintenance and reposition vessels during the winter months Financial Outlook • Contract revenue backlog (including options) exceeds $440.0M, with incremental re-contracting opportunities in a higher day rate environment across all asset classes and regions 4 • Solid underlying commodity price fundamentals, increased tendering activity, and additional project startups supporting a multiyear offshore upcycle (3) • Increasing demand across all asset classes and geographical regions, with OSV demand expected to increase by 26% over the period 2023-2025 Favorable • Limited supply of available modern OSV vessels and no newbuild orderbook of any significance should apply upward pressure on utilization and day rates Market Fundamentals • U.S. liftboat market poised to see significant activity, driven by federally mandated decommissioning and plug and abandonment work, as well as demand to (3) support the development/construction of offshore wind farms (feedering, accommodation, tower sections installation, substations, etc.) • Energy-efficient fleet focusing on reduced fuel consumption and CO emissions 2 5 • Current fleet has seven hybrid PSVs. Four PSVs to be updated with hybrid propulsion by Q2 2025 Focus on ESG and • Rolled out the installation of (i) air quality technology to eliminate airborne viruses and reduce energy consumption; (ii) ultrasonic antifouling systems to reduce bio fouling; and (iii) water purification systems to eliminate plastic bottle waste across the fleet Energy Transition • Cooperation with AI-powered marine technology firm Spinergie to optimize operations through intelligent fuel, activity prediction and energy plant optimization (1) Source: Bloomberg, as of market close on July 2, 2024. (2) Source: Company filings. seacormarine.com 19 (3) Source: Clarksons Research Services.

4. Appendix seacormarine.com 20

Financials – Income and Loss Statement Income & Loss Statement (in $ thousands) Q1 2024 FY 2023 FY 2022 Operating Revenues 62,770 279,511 217,325 Costs and Expenses: Operating 48,099 159,650 171,985 Administrative and General 11,917 49,183 40,911 Lease Expense 481 2,748 3,869 Depreciation and Amortization 12,882 53,821 55,957 73,379 265,402 272,722 Gains (Losses) on Asset Dispositions and Impairments, Net (1) 21,409 1,398 Operating Income (Loss) (10,610) 35,518 (53,999) Other Income (Expense): Interest Income 593 1,444 784 Interest Expense (10,309) (37,504) (29,706) Gain on Debt Extinguishment - (2,004) 10,429 Derivative Gains, Net (543) 608 - Foreign Currency Losses, Net (80) (2,133) 1,659 Gain (Loss) from Return of Investments in 50% or Less Owned Companies and Other, Net (95) - 755 (10,434) (39,589) (16,079) Income (Loss) from Continuing Operations Before Tax Expense (Benefit) and Equity in Earnings (Losses) of 50% or Less Owned Companies (21,044) (4,071) (70,078) Income Tax Expense (Benefit): Current 2,770 13,860 8,485 Deferred (1,845) (5,061) 97 925 8,799 8,582 Income (Loss) Before Equity in Earnings (Losses) of 50% or Less Owned Companies (21,969) (12,870) (78,660) Equity in Earnings (Losses) of 50% or Less Owned Companies, Net of Tax (1,100) 3,556 7,011 Income (Loss) from Continuing Operations (23,069) (9,314) (71,649) Income (Loss) on Discontinued Operations, Net of Tax - - - Net Income (Loss) (23,069) (9,314) (71,649) Net Income (Loss) Attributable to Noncontrolling Interests in Subsidiaries - - 1 Net Income (Loss) attributable to SEACOR Marine Holdings Inc. (23,069) (9,314) (71,650) Source: Company filings. seacormarine.com 21

Financials – Balance Sheet and Debt Overview Balance Sheet (in $ thousands) Debt Overview (as of March 31, 2024) ASSETS Q1 2024 FY 2023 FY 2022 Final Principal Debt Facility Maturity Outstanding ($M) Current Assets: Cash and Cash Equivalents, including Restricted Cash 62,159 84,131 43,045 Guaranteed Notes July 2026 90.0 Other Current Assets 77,906 80,555 89,268 Total Current Assets 140,065 164,686 132,313 (1) New Convertible Notes July 2026 35.0 Property and Equipment, net of Depreciation 582,138 594,682 656,905 Unsecured Debt – Sub-Total 125.0 Construction in Progress 13,410 10,362 8,111 SEACOR Alpine Credit Facility June 2028 25.2 Net Property and Equipment 595,548 605,044 665,016 Leases and Other Assets 9,233 10,606 18,038 2023 SMFH Credit Facility September 2028 115.9 Total Assets 744,846 780,336 815,367 Sea-Cat Crewzer III Term Loan Facility July 2029 13.0 LIABILITIES AND EQUITY Q1 2024 FY 2023 FY 2022 SEACOR Delta Shipyard Financing February 2029 66.4 Current Liabilities: Current Portion of Lease Liabilities 1,318 1,626 2,826 Secured Debt – Sub-Total 220.5 Current Portion of Long-Term Debt 28,605 28,365 61,512 Other Current Liabilities 44,520 47,095 56,824 Total Debt 345.5 Total Current Liabilities 74,443 77,086 121,162 (2) Discount / Issuance Costs (34.9) Long-Term Lease Liabilities 3,390 3,535 11,520 Total Debt net of Discount / Issuance Costs 310.6 Long-Term Debt 281,989 287,544 260,119 Other Long-Term Liabilities 36,158 37,947 43,420 Total Liabilities 395,980 406,112 436,221 Total Equity 348,866 374,224 379,146 Total Liabilities and Equity 744,846 780,336 815,367 (1) Conversion Price of $11.75 per share. (2) Debt discounts and costs incurred in connection with the issuance of debt are amortized over the life of the related debt using the effective interest rate method for term loans and straight-line method for revolving credit facilities and are included in interest expense in the accompanying consolidated statements of income (loss). seacormarine.com 22 Source: Company filings.

Financials – Cash Flow Statement (1/2) Cash Flow Statement (in $ thousands) Q1 2024 FY 2023 FY 2022 Cash Flows from Continuing Operating Activities: Net Income (Loss) (23,069) (9,314) (71,649) Adjustments to Reconcile Net Income (Loss) to Net Cash Provided by (used in) Operating Activities: Depreciation and Amortization 12,882 53,821 55,957 Debt Discount and Deferred Financing Cost Amortization 2,221 8,340 6,701 Stock-based Compensation Expense 1,645 6,000 4,597 Allowance for Credit Losses 3 3,519 489 (Gains) Losses from Equipment Sales, Retirements or Impairments, Investments in 50% or Less Owned Companies 1 (21,409) (1,398) (Gain) Loss on Debt Extinguishment - 177 (12,700) Derivative (Gains) Losses 543 (608) - Interest on Finance Lease - 202 244 Settlements on Derivative Transactions, Net 164 577 (749) Currency (Gains) Losses 80 2,133 (1,659) Deferred Income Taxes (1,845) (5,061) 97 Equity (Earnings) Losses 1,100 (3,556) (7,011) Dividends Received from Equity Investees - 2,241 3,057 Changes in Operating Assets and Liabilities: Accounts Receivables 4,291 (17,215) (652) Other Assets (1,290) 2,288 2,559 Accounts Payable and Accrued Liabilities (3,895) (13,188) 7,501 Net Cash provided by (used in) Operating Activities (7,169) 8,947 (14,616) Cash Flows from Continuing Investing Activities: Purchases of Property and Equipment (3,416) (10,604) (462) Proceeds/Cash Impact from Disposition/Sale of Property and Equipment - 44,730 6,734 Cash Flow related to Investments in 50% or Less Owned Companies and Equity Investees - - 66,528 Notes Due from Others - - (28,831) Principal Payments on Notes due from Others - 15,000 13,831 Net Cash provided by Investing Activities (3,416) 49,126 57,800 Source: Company filings. seacormarine.com 23

Financials – Cash Flow Statement (2/2) Cash Flow Statement (in $ thousands) Q1 2024 FY 2023 FY 2022 Cash Flows from Continuing Financing Activities: Payments on Long-Term Debt (7,530) (29,165) (38,152) Payments on Debt Extinguishment - (131,604) - Payments on Debt Extinguishment Costs - (1,827) (2,271) Proceeds from issuance of Long-Term Debt, net of Issue Costs - 148,475 - Proceeds from issuance of Common Stock, net of Issue Costs - 24 - Proceeds from Exercise of Stock Options and Warrants - 6 151 Payments on Finance Lease (9) (531) (351) Acquisition of Common Shares for Tax Withholding Obligations (3,850) (2,368) (732) Net Cash used in Financing Activities (11,389) (16,990) (41,355) Effects of Exchange Rates 2 3 (4) Net Increase (Decrease) in Cash, Cash Equivalents and Restricted Cash (21,972) 41,086 1,825 Cash, Cash Equivalents and Restricted Cash, Beginning of Period 84,131 43,045 41,220 Cash, Cash Equivalents and Restricted Cash, End of Period 62,159 84,131 43,045 Source: Company filings. seacormarine.com 24

Financial Reconciliations Adjusted EBITDA Reconciliation (in $ thousands) Q1 2024 FY 2023 FY 2022 Net Income (Loss) attributable to SEACOR Marine Holdings Inc. (23,069) (9,314) (71,650) Depreciation and Amortization 12,882 53,821 55,957 Interest Expense 10,309 37,504 29,706 Interest Income (593) (1,444) (784) Taxes 925 8,799 8,562 Earnings before Interest, Taxes, Depreciation and Amortization (EBITDA) 454 89,366 21,811 (Gains) Losses on Asset Dispositions and Impairments, Net 1 (21,409) (1,398) (Gains) Losses on Debt Extinguishment - 2,004 (10,429) Derivative (Gains) Losses, Net 543 (608) - Foreign Currency (Gains) Losses, Net 80 2,133 (1,659) Other, Net 95 - (755) Equity in (Earnings) Losses Earnings of 50% or Less Owned Companies 1,100 (3,556) (7,011) Net Income (Loss) attributable to Noncontrolling Interests in Subsidiaries - - 1 Adjusted EBITDA 2,273 67,930 560 DVP Reconciliation (in $ thousands) Q1 2024 FY 2023 FY 2022 Operating Income (Loss) (10,610) 35,518 (53,999) (Gains) Losses on Asset Dispositions and Impairments, Net 1 (21,409) (1,398) Depreciation and Amortization 12,882 53,821 55,957 Lease Expense 481 2,748 3,869 Administrative and General 11,917 49,183 40,911 Direct Vessel Profit (DVP) 14,671 119,861 45,340 Source: Company filings. seacormarine.com 25

Financial Reconciliations (continued) DVP to Adjusted EBITDA Reconciliation (in $ thousands) Q1 2024 FY 2023 FY 2022 Operating Revenues 62,770 279,511 217,325 Operating Expenses 48,099 159,650 171,985 Direct Vessel Profit (DVP) 14,671 119,861 45,340 Administrative and General 11,917 49,183 40,911 Lease Expense 481 2,748 3,869 Adjusted EBITDA 2,273 67,930 560 Net Debt Reconciliation (in $ thousands) Q1 2024 FY 2023 FY 2022 Current Portion of Long-Term Debt 28,605 28,365 61,512 Long-Term Debt 281,989 287,544 260,119 Discount and Issuance Costs 34,900 37,115 42,163 Total Debt 345,494 353,024 363,794 Cash and Cash Equivalents, including Restricted Cash 62,159 84,131 43,045 Net Debt 283,335 268,893 320,749 Source: Company filings. seacormarine.com 26

Fleet Maintenance and Capital Expenditures Historical Major Repairs and Drydocking Expenses SMHI Fleet Age Profile Near-term increased level of Major Repairs and Drydocking Expenses given the fleet’s age profile 5-year and 10-year surveys due in 2024 result in 8 8 $25M higher than usual maintenance activity 7 $20M 5 5 5 $15M 4 $10M 20 2 2 2 2 11 $5M 1 1 1 1 1 1 9 8 8 7 5 $0M 2018 2019 2020 2021 2022 2023 Q1 2024 Capital Expenditures for Vessel Upgrades as of March 31, 2024 Unfunded Capital Commitments 9M 2024 2025 Deferred Hybrid battery power systems – 4x PSVs $6.5M $4.0M - DP-2 upgrade – 1x Liftboat $0.3M $1.2M - Ballast Water Treatment Systems $0.5M - - New construction – 1x FSV (deferred indefinitely) - - $9.2M Total $7.3M 5.2M $9.2M seacormarine.com 27

FSV Asset Class (1/3) FSV (Fast Support Vessel) About Fast Supply Vessels Global Fleet Overview • FSVs are crucial for offshore drilling and production logistics, capable of reaching over 30 knots and delivering over 13,000 BHP 195 3 • Vessels range from 145 to 200ft in length, offering a cost-efficient, 87 10 comfortable, flexible and safe alternative to helicopter transportation • They can accommodate up to 150 passengers with amenities like reclining 85 8 business-class seats, satellite TV, wireless internet and LED lighting 43 2 • Advanced technologies include DP-2, Dynamic Ride Control, Controllable Speed Propellers, Water Jet Propulsion and Engine Monitoring Systems Global FSV fleet • Cargo capacities range from 140 to 425 long tons for various supplies SEACOR Marine FSV fleet • High-speed catamarans in the fleet can reach up top 40 knots, featuring luxury amenities and equipped with DP-2 or DP-3 options for specific operational needs 27% SMHI owns 27% SEACOR Marine of the active global fleet of DP-2 / DP-3 Other FSVs of 15 years of age and younger 73% Source: SEACOR Marine Holdings Inc., Clarksons Research Services Ltd., Clarksons Securities AS. seacormarine.com 28

FSV Asset Class (2/3) FSV (Fast Support Vessel) Crew Transportation at High Speed and in Comfort Orderbook at ~1% with Limited Fleet Growth FSV Orderbook OB as % of total fleet Fleet growth (YoY) • Market is dominated by the U.S. and Mexico, followed by West Africa and the Middle East 80 45% 35% 60 • Demand drivers: 25% 40 ✓ Cost efficiency 15% ✓ Safety 20 5% ✓ Service requirement - (5%) ✓ Alternative to helicopters 2007 2009 2011 2013 2015 2017 2019 2021 2023 • Distinctive features of SMHI’s fleet, which holds a strong market position in FSV Supply Side Considerations the high-end FSV market: ✓ Speed (30-40 knots) • Most of the fleet was ordered and built during the previous cycle, with the ✓ Dynamic Positioning (DP-2 / DP-3) orderbook peaking at 33% of the fleet in 2007 and decreasing to 1% by 2024 ✓ Comfort & onboard entertainment ✓ Jet propulsion • Fleet growth has been negative or zero since 2019, and the current fleet consists of about 410 vessels: 208 non-DP, 98 DP-1, 100 DP-2 and 3 DP-3 • Favorable supply dynamics with orderbook standing at ~1% • The average age of the total fleet is 15 years, with the non-DP fleet averaging closer to 19 years • Additional capacity may be needed to counter natural attrition, contingent on increased activity in West Africa Source: SEACOR Marine Holdings Inc., Clarksons Research Services Ltd., Clarksons Securities AS. seacormarine.com 29 No units in Orderbook Orderbook / Fleet Growth

FSV Asset Class (3/3) FSV (Fast Support Vessel) Key Advantages of SMHI’s Next Generation FSVs FSV Fleet Utilization Overview SMHI FSV Fleet Utilization Total FSV Fleet Utilization % Working Utilization • Cost and time savings of 50-70% on passenger transfers compared to 100% helicopter transfers • Safe operations: In case of emergency, the capacity of FSVs allow a high 80% number of personnel to be evacuated: SMHI’s FSVs are also equipped with night vision for search and rescue 60% • Dynamic Positioning (DP-2 and DP-3) with high redundancy and excellent maneuverability 40% • SMHI’s FSVs are equipped with Ride Control and Business Class seats 20% • Mission flexible between cargo and operations 0% 2017 2018 2019 2020 2021 2022 2023 FSV utilization has recovered from 44% in Q1 2017 to 72% in Q1 2024 Note: Q1 2024 is a seasonal low point as activity picks up during the summer Source: SEACOR Marine Holdings Inc., Clarksons Research Services Ltd., Clarksons Securities AS. seacormarine.com 30

Liftboat Asset Class (1/2) Liftboats About Liftboats Global Fleet Overview • Liftboats are self-propelled, self-elevating vessels with large, extendable legs 140 6 that can be lowered to the seabed to lift the vessel above the water’s surface • They provide a stable base for offshore oil and gas operations, including well 95 2 intervention, maintenance and construction activities 147 0 2 0 • Equipped with cranes, living quarters, and other facilities, liftboats support personnel and equipment for various tasks • In the renewable energy sector, liftboats are used for the installation, Global Liftboat fleet SEACOR Marine Liftboat fleet maintenance, and repair of offshore wind turbines Liftboats Scope of Work • Their ability to operate in shallow waters and their mobility enhance operational efficiency and safety Offshore Wind Offshore Oil and Natural Gas • Liftboats are essential assets for both the oil and gas industry and the ✓ Tower Sections - Installation✓ Well intervention and workover renewable energy sector ✓ Export Cables✓ Construction, Maintenance, Repair ✓ Offshore Substation✓ Subsea operations ✓ Array Cables✓ Diving operations ✓ Commissioning✓ Accommodations ✓ Site Preparation✓ Decommissioning, Plug & Abandonment ✓ Accommodation✓ Coring Source: SEACOR Marine Holdings Inc., Clarksons Research Services Ltd., Clarksons Securities AS. seacormarine.com 31

Liftboat Asset Class (2/2) Liftboats Liftboat Supply Side Considerations Orderbook at ~6% with Stable Fleet Growth Liftboat Orderbook OB as % of total fleet Fleet growth (YoY) • The total fleet of liftboats is around 440 vessels, with fleet growth remaining stable at ~3% per annum 60 30% 25% 50 • Many active vessels were built over 25 years ago, with lower-spec vessels (lift-leg 20% 40 elevations <200ft) being the oldest and making up ~54% of the fleet 15% 30 10% • Higher-spec vessels (lift-leg elevations > 300ft) account for 17% of the fleet, are 20 5% relatively modern with an average age of 8 years compared to the total fleet’s 10 - average of 24 years - (5%) 2007 2009 2011 2013 2015 2017 2019 2021 2023 • Most recent vessel orders were made during the previous upturn, with orderbooks expanding from 6% in 2013 to around 15% in Q2 2017 Liftboat Fleet Utilization SMHI Liftboat Fleet Utilization Total Liftboat Fleet Utilization 100% Liftboat utilization is negatively impacted 80% primarily by shorter project-based work in 60% the US GoM 40% 20% 0% 2017 2018 2019 2020 2021 2022 2023 Source: SEACOR Marine Holdings Inc., Clarksons Research Services Ltd., Clarksons Securities AS. seacormarine.com 32 Orderbook (No. of Units) Orderbook / Fleet Growth

Liftboats - Key Component to Address Legacy Offshore Infrastructure Legacy Oil and Natural Gas Market ESG Focus Leading to New Demands • High level of Decommissioning and Plug & Abandonment activity expected in the U.S. after several years of deferred program Increased focus on Liftboats should Liftboat business methane emissions participate in should indirectly • Decommissioning strategy has shifted positively for activity, with clear intentions to lead to additional upcoming carbon benefit from address legacy decommissioning obligations maintenance and capture and storage legislative incentives repair projects in the Inflation Almost 1/3 of Reduction Act 53% of U.S. 334 structures ~60% of fixed structures in the offshore wells are with submitted US GoM are located in abandoned wells are decommissioning permanently terminated unplugged applications abandoned leases Liftboats provide flexible working platforms in shallow water areas Coil tubing and other Platform repair and production support Maintain and repair maintenance. Ongoing operations. Demand is pipelines, as well as demands for so-called increasing with an installations “make safe” projects improved commodity price environment Source: Bureau of Ocean Energy Management, Bureau of Safety and Environmental Enforcement, U.S. Government Accountability Office. seacormarine.com 33

Liftboats - Well Positioned to Support US Offshore Wind Sector Description US Offshore Wind Forecast 35 2,500 • Despite a “reset” in 2024 after an active campaign in 2023, the 32 development of offshore wind farms on the East Coast of the United Installed Capacity of 29.5 GW States will drive significant vessel demand including CTVs, 30 SOVs/CSOVs, Liftboats and WTIVs over the next decade 2,000 • The Inflation Reduction Act of 2022 further supports the development 25 of offshore wind farms in the United States, facilitating offshore 21 leasing and permitting 1,500 20 • Premium Jones Act qualified liftboats are well positioned to secure 17 17 jobs including accommodation, trenching and feedering equipment 15 from U.S. ports to offshore sites, as well as light construction and 13 1,000 installation of subsea equipment 10 10 • Vessels of opportunity; lack of available U.S. equipment and limited 7 number of vessels under construction will see offshore wind projects 500 using Jones Act qualified vessels work in tandem with foreign 4 4 5 equipment in the near-term 2 0 0 2024 2025 2026 2027 2028 2029 2030 2031 2032 2033 Active US Wind Farms (LHS) Active US Turbines (RHS) Source: Clarksons Research Services. seacormarine.com 34 # of Active US Wind Farms # of Active US Turbines

Strong Commitment to ESG Our Values and Responsible Business Practices Second Sustainability Report (2022/2023) SEACOR Marine works towards aligning its goals with: • United Nations Sustainable Development Goals (“SDGs”) Local • United Nations Global Compact – Economic Decarbonizing Empowerment Operations Sustainable Ocean Principles Diversity, • Paris Climate Accord; and Anti-Corruption Equity & Inclusion • Frameworks provided by the: • Sustainability Accounting Standards Human Health and Safety Board (“SASB”) Rights • Task Force on Climate-Related Financial Disclosures (“TCFD”) Ocean Responsible Health Procurement Ethical • Global Reporting Initiative (“GRI”) Operations SEACOR Marine – Winner of the 2024 OSJ ESG Award • Recognizes the positive impact of SEACOR Marine’s environmental, social and governance (“ESG”) program Source: Company’s 2022/2023 Sustainability Report. seacormarine.com 35

Advancing Our ESG Program Notable Highlights from our 2022/2023 Sustainability Report 1 Completed pilot project implementing direct (Scope 1) emissions tracking on select vessels and data collection for indirect (Scope 2) emissions 2 Introduced a carbon intensity indicator (“CII”) metric on select vessels 3 Supported one of the largest offshore wind projects under development in the U.S. (South Fork), located off the coast of Long Island, New York 4 Completed implementation of Safe Water on Board (“SWOB”) on select vessels as part of our pilot project to reduce plastic waste 5 Published our Supplier Code of Conduct and developed our Responsible Procurement Policy 6 Published our Diversity, Equity and Inclusion (“DE&I”) Statement 7 Created sub-committees and working groups in support of sustainability and ESG oversight responsibilities of the Board of Directors 8 Continued development of our Compliance Training Program, including the addition of courses on sustainability, environmental protection and DE&I Source: Company’s 2022/2023 Sustainability Report. seacormarine.com 36

Case Study: Ongoing ESG Initiatives Across the Fleet Investments in Energy Storage Systems Cooperation with Spinergie Potential Future Projects • 7 of SMHI’s 11 most modern PSVs are now hybrid• SMHI is working marine technology firm Spinergie Carbon Capture (France) to analyze fleet data with the goal to optimize • PSV “SEACOR Yangtze” completed its upgrades in Q1 operations• SMHI is in discussion with Value Maritime (Netherlands) 2024, including: • Spinergie developed their “Smart Fleet Management” • Value Maritime has developed the “Filtree System”, an • Installation of an energy storage system platform, an AI powered and data-driven platform to onboard carbon capture system for small and medium- • Upgrade of a closed bus-tie system analyze large amounts of data in a concise manner sized vessels • Installation of a shore tie connection • DP system upgrade• SMHI currently tracks its entire fleet, and developed an • The system includes a small plug and play gas cleaning intelligent fuel and activity prediction tool for a portion of system that removes 99% of particulate matter and CO 2 • Committed to four additional energy storage systems, to its fleet which does not have granular data for reporting from the exhaust gas be installed on the last four PSVs by 2025 • SMHI has taken initial steps to engage the fleet on voyage • The system is also equipped with a filter that cleans with • Results in reduction in fuel consumption and CO and energy plant optimization to make its operation washing water and the waste product fed into the sludge 2 emission by up to 40% greener tanks • Solution can be well-suited for SMHI’s fleet of liftboats seacormarine.com 37

SEACOR Marine Safety Benchmarks (1) Year-on-Year Total Recordable Injury Rate (“TRIR”) vs. Industry Benchmarks 5-year TRIR Average (2018 - 2022) SEACOR Marine 0.227 ISOA 1.014 IMCA 1.342 1.700 1.450 1.360 1.360 1.110 1.100 1.090 ISOA / IMCA 0.950 has not yet 0.880 published 0.780 2023 figures 0.531 0.202 0.184 0.179 0.100 0.037 2018 2019 2020 2021 2022 2023 SEACOR Marine ISOA IMCA (1) TRIR = (Fatalities + Lost Time Incidents + Restricted Work Cases + Medical Treatment Cases) x 1,000,000 / Total Hours Worked. Source: Company, International Support Owners Association (ISOA), International Marine Contractors Association (IMCA). seacormarine.com 38

A. Highly Seasoned Management and Board of Directors Management Team Board of Directors Years Experience Andrew R. Morse John Gellert 25+ Independent Non-Executive Chairman of the Board, Chair of the Audit Committee, Member of President & Chief Executive Officer the Compensation Committee, and of the Nominating & Corporate Governance Committee Jesús Llorca John Gellert 24 Executive Vice President & Chief Financial Officer President, Chief Executive Officer and Director R. Christopher Regan Gregory Rossmiller 25+ Independent Director, Member of the Audit Committee, Chair of the Compensation Committee, Senior Vice President & Chief Accounting Officer Chair of the Nominating & Corporate Governance Committee Julie Persily Andrew H. Everett II 16 Independent Director, Member of the Audit Committee, Member of the Compensation Senior Vice President, General Counsel & Secretary Committee, Member of the Nominating & Corporate Governance Committee Philippe Wulfers Alfredo Miguel Bejos 16 Vice President of Finance Director seacormarine.com 39

Contact: Investor Relations SMHI LISTED Email: InvestorRelations@seacormarine.com NYSE Website: www.seacormarine.com seacormarine.com 40