Naval Foundry and Propeller Center Delivers Final Propulsor Component for First Columbia-class Submarine  Front Page ...

Lusitania and her sister-ship Mauretania were originally fitted with three-bladed propellers ... from New York when she was torpedoed by German submarine U-20 off the coast of southern Ireland ...

The array was damaged, but the sub and the ship did not collide ... extremely dangerous had the array gotten caught in the submarine's propellers. The Navy has complained in the past that Chinese ...

The Maritime Self-Defense Force submarine Soryu's failure to detect a cargo ship in time to avoid slamming ... s bow to insulate it from the propeller noise in the rear, creating a blind spot ...