Type XXI submarines were a class of German diesel–electric Elektroboot (German: "electric boat") submarines designed during the Second World War. One hundred and eighteen were completed, with four being combat-ready.

The Type 21 frigate, or Amazon-class frigate, was a British Royal Navy general-purpose escort that was designed in the late 1960s, built in the 1970s and served throughout the 1980s into the 1990s. [1]

Nov 13, 2020 · More than 250 feet long and displacing 1,620 tons, the Type XXI packed six hydraulically-reloaded torpedo tubes capable of firing more than 23 stored torpedoes. This arsenal could turn a convoy...

Development history, specification, combat service and photos of the revolutionary Elektroboat - Type XXI U-boat.

Type XXI Type: German late-war U-boat (submarine). The U-boat Type XXI, also known as the “Elektroboote” (German for “electric boats”), was a class of German submarines designed during the later stages of World War II.

Jul 11, 2017 · Germany’s stealthy Type XXI U-boat was a true technological breakthrough, but it aided the Allies more than the Nazis

Type 21 can refer to: Type 21 frigate, or Amazon-class frigate, a late-20th-century escort vessel of the Royal Navy. Type 021-class missile boat, a Chinese missile-firing naval vessel first produced in about 1975, and still in production. Type XXI submarine, a German technologically advanced submarine produced in 1945.

Type XXI U-boats, also known as "Elektroboote" (German: "electric boats"), were the first submarines designed to operate primarily submerged, rather than as surface ships that could submerge as a means to escape detection or launch an attack.

Jan 8, 2018 · The Type XXI was designed specifically for lengthy submerged operation and this centered on high-powered electrical machinery with density cells built directly into the hull.

The Type 21 frigate, or Amazon-class frigate, was a Royal Navy general-purpose escort that was designed in the late 1960s, built in the 1970s and served throughout the 1980s into the 1990s.