a set of rungs fixed to the side of a vessel, forming a ladder from the weather deck to the water line.
Origin of sea ladder
First recorded in 1900–05
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019
Examples from the Web for sea ladder
These two had long since waived the formality of the sea-ladder.
“Great stuff, you kids, but I am too fat and have to wend my middle-aged way down the sea-ladder,” and Mr. Wing did it.
British Dictionary definitions for sea ladder
a rope ladder, set of steps, etc, by which a boat may be boarded at sea
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012