Wikipedia
Submarine chaser
A submarine chaser is a small and fast naval vessel, specifically intended for anti-submarine warfare. Although similar vessels were designed and used by many nations, this designation was most famously used by ships built by the US. Many of the US World War I sub-chasers found their way to friendly powers by way of Lend-Lease in World War II.
Usage examples of "submarine chaser".
There were, among others, several Dutch minesweepers, a Norwegian corvette, and a French submarine chaser of so dramatic a design that it was difficult to tell, at a first glance, whether she was sinking or not.
Other men give their mistresses a diamond bracelet but he gives his a submarine chaser!