who designed them?
Built by Thornycroft
Destroyer
These torpedo boat destroyers all featured a turtleback (i.e. rounded) forecastle that was characteristic of early British TBDs. and were both built by Thornycroft, 
how far is richmond va from newport news va UNANSWERABLE why is the second city named as such? The source of the name "Newport News" is not known can you name some industries that sustain the city economically? Shipbuilding, military, and aerospace can you name some agencies that are involved in the first industry you just mentioned? Newport News Shipbuilding,  CSX Transportation what is the former most well-known for? Designer, builder and refueler of United States Navy aircraft carriers and one of two providers of U.S. Navy submarines did they contribute to the military efforts during the first world war? Yes, it delivered 25 destroyers during the war what are they used for? Long-endurance warship intended to escort larger vessels in a fleet, convoy or battle group and defend them against powerful short range attackers were they used in any other battles? Yes, in Second World War what was its design developed from? "Torpedo boat destroyer"
wiki:1633171
Destroyer [SEP] Development of the modern destroyer
Thornycroft & Company, and from Yarrows, and and from Laird, Son & Company. These torpedo boat destroyers all featured a turtleback (i.e. rounded) forecastle that was characteristic of early British TBDs. and were both built by Thornycroft, displaced 260 tons (287.8 tons full load) and were 185 feet in length. They were armed with one 12-pounder gun and three 6-pounder guns, with one fixed 18-in torpedo tube in the bow plus two more torpedo tubes on a revolving mount abaft the two funnels. Later the bow torpedo tube was removed and two more 6-pounder guns added instead. They produced 4,200 hp from a pair of Thornycroft water-tube boilers, giving them a top speed of 27 knots, giving the range and speed to travel effectively with a battle fleet.