Exhibit 12.1

The Navigators Group, Inc.

Computation of Ratio of Earnings to Fixed Charges

	Year ended December 31,
	2017		2016		2015		2014		2013
Income before income taxes	$	74,806	$	117,509	$	117,474	$	140,536	$	92,273
Add:
Portion of rents representative of the interest factor		4,394		4,430		4,295		4,407		3,817
Interest expense		15,447		15,435		15,424		15,413		10,507
Call premium on Senior Notes		—		—		—		—		17,895
Letter of credit charges		3,003		2,986		1,968		2,351		1,985
Amortization of discount and other bank fees		210		198		187		176		159
Income as adjusted	$	97,860	$	140,558	$	139,348	$	162,883	$	126,636
Fixed charges:
Portion of rents representative of the interest factor	$	4,394	$	4,430	$	4,295	$	4,407	$	3,817
Interest expense		15,447		15,435		15,424		15,413		10,507
Call premium on Senior Notes		—		—		—		—		17,895
Letter of credit charges		3,003		2,986		1,968		2,351		1,985
Amortization of discount and other bank fees		210		198		187		176		159
Total	$	23,054	$	23,049	$	21,874	$	22,347	$	34,363
Ratio of earnings to fixed charges		4.24		6.10		6.37		7.29		3.69