Two other men submitted plans for submarine boats in the competition which was won by the Holland boat, George C.
I think we made some inquiries about the safety of submarine boats in general.
Hand in hand with this development a large number of improvements were made on the original torpedo and some of these devices proved of great usefulness in the development of submarine boats.
The submarines and near-submarines built in the United States during the Civil War were remarkable rather for what they actually accomplished than for what they contributed towards the development of submarine boats.
Robert Fulton, the man whose genius made steam navigation a success, was the next to turn his attention to submarine boats, and submarine warfare by submerged mines.
Submarine boats, using submarine torpedoes, were able to destroy ships a hundred years ago; and a little less than half a century ago naval vessels were destroyed in actual warfare by these boats.
Submarine boats cannot be driven under water at a speed exceeding six knots.
This officer published a little pink-backed pamphlet on submarine boats--the first book devoted exclusively to this subject--in 1875.
The above list will hopefully provide you with a few useful examples demonstrating the appropriate usage of "submarine boats" in a variety of sentences. We hope that you will now be able to make sentences using this group of words.
