Examples from the Web for rater
Mr. Jessop was the owner of the Molly, twenty rater, and Coquette, half rater.The Sportswoman's Library, v. 2|Various
She was similar to the 2½-rater 'Molly' in general arrangement and appearance.
At all events, she is a fine specimen of the advanced type of rater, and is good in all weathers.
Experientia docet that the rater, though she can lay to, (p. 358) cannot be hove to and have her way stopped.
A very varied programme was provided, including all classes from the 100-tonner to the ½-rater, in all about five different races.Yachting Vol. 2|Various.