EXHIBIT 5.1

Arnall Golden Gregory LLP

171 17^th Street, NW, Suite 2100

Atlanta, Georgia 30363-1031

Telephone: (404) 873-8500

Facsimile: (404) 873-8501

April 23, 2024

Marine Products Corporation

2801 Buford Highway, Suite 300

Atlanta, Georgia 30329

Re: Registration Statement on Form S-8

Ladies/Gentlemen:

This opinion is rendered in connection with the proposed issue and sale by Marine Products Corporation, a Delaware corporation (the “Company”), of up to 3,000,000 shares of the Company’s common stock (the “Shares”) pursuant to the Marine Products Corporation 2024 Stock Incentive Plan (the “Plan”) upon the terms and conditions set forth in the Registration Statement on Form S-8 (the “Registration Statement”) filed by the Company with the Securities and Exchange Commission under the Securities Act of 1933, as amended (the “Act”), the Plan, and the prospectus related thereto, as applicable. We have acted as counsel for the Company in connection with the issuance and sale of the Shares by the Company.

In rendering the opinion contained herein, we have relied in part upon examination of the Company’s corporate records, documents, certificates and other instruments and the examination of such questions of law as we have considered necessary or appropriate for the purpose of this opinion.  Based upon the foregoing, we are of the opinion that the Shares have been duly and validly authorized, and the Shares will be legally issued, fully paid and non-assessable (a) when issued in the manner contemplated by the terms of the Plan and pursuant to a current prospectus in conformity with the Act, and (b) upon receipt by the Company of payment therefor (assuming that such payment at all times exceeds the par value thereof).

We consent to the filing of this opinion as an exhibit to the Registration Statement.  This consent is not to be construed as an admission that we are a party whose consent is required to be filed with the Registration Statement under the provisions of the Act.

Sincerely,

/s/ ARNALL GOLDEN GREGORY LLP

ARNALL GOLDEN GREGORY LLP