Greater Underwater Propulsion Power Program ( GUPPY ) being conducted by the United States Navy in the Atlantic Ocean. Aerial views of German submarine U-2513 underway. The submarine submerged in water with submarine snorkeling. Open sea and wake due to the movement of the submarine through water. The submarine surfaces and moves on water.
Greater Underwater Propulsion Power Program ( GUPPY ) being conducted by the United States Navy in the Atlantic Ocean. Aerial views of German submarine U-2513 underway. The submarine submerged in water with submarine snorkeling. The submarine crash dives under the water surface. It resurfaces and moves on water.
Greater Underwater Propulsion Power Program ( GUPPY ) being conducted by the United States Navy in the Atlantic Ocean. Aerial views of German submarine U-2513 underway. The submarine crash dives below the water surface. The periscope of the submarine cuts through water. The submarine resurfaces and moves on water.
Greater Underwater Propulsion Power Program ( GUPPY ) being conducted by the United States Navy in the Atlantic Ocean. A United States submarine underway after being modified under GUPPY. The submarine with a marine railway in the foreground.
Greater Underwater Propulsion Power Program ( GUPPY ) being conducted by the United States Navy in the Atlantic Ocean. United States submarine USS Amberjack (SS-522) underway with its crew on the deck of the submarine. Two men in a boat approach the submarine. The conning tower of the submarine.
Activities of U.S. navy personnel aboard U.S. Ship in the Atlantic Ocean. Ships anchored at harbor as seen from a ship. Mountains in the background. Smoke rising from explosion in the far background. U.S. flag on the ship. Sailors standing beside railings. Captains and an official talk. Sailors on deck. Navy personnel standing in attention as they are given instructions.