This book has been released under the following alternate titles:-
A Struggle for Freedom; The Story of Young Amos Dunkel, Oarsman in the Whale Boat Navy, in 1776'
The Navy Boys on Long Island Sound. A Story of the Whale Boat Navy of 1776 (Series: The Navy Boys)
No information is available about this novel other than what can be gleaned from it's alternate titles.
It is presumably about the adventures of Amos Dunkel an oarsman in the whale boat navy based in Long Island Sound during 1776