They were twin-screw steamers, and were provided with every safety device known at the time.
If he will not look with his whole being at a twin-screw steamer, he will not see it.
On this little machine the twin-screw propellers, 8-1/2 feet in diameter, sweep practically the whole width of the machine.
The twin-screw liner, Fruitlands,—do you really want the first?
The steam-turbine and the twin-screw propeller have made rapid ocean travel possible.
The best steamers, therefore, are fitted with the twin-screw propeller.
The Orient Line has the Ophir, a twin-screw ship, about five hundred feet long, and others nearly as large.
In twin-screw boats there are two distinct engines, one for each propeller.
Not so the twin-screw ship; for on such ships the screws can be used for steering as well as propelling.
Grau closed in and strove to ram, but the Cochrane was a twin-screw steamer, and was manipulated well.