Full plans are available at http://www.caswellplating.com/models/images/XCraftplan.jpg
Yes, it can be (midget submarine). Midget can be a noun for a small person, or an adjective meaning of a small or reduced size.
Clutch Cargo - 1959 The Midget Submarine 1-23 was released on: USA: 1959
Thomas John Waldron has written: 'Midget submarine' -- subject(s): History, Midget submarines, Naval operations, Submarine, World War, 1939-1945
about 22million
about 22million
Midget subs were used by Britain, Italy, Germany, and Japan during WWII. Midget subs were normally carried by a mother submarine (usually on it's back).
From Britannica Concise Encyclopedia: (64)Japanese losses:4 midget submarines sunk,1 midget submarine run aground,29 aircraft destroyed,55 airmen killed9 submariners killedRead more: How_many_Japanese_died_during_the_attack_on_Pearl_Harbor
The X-class was a 4-man midget submarine built for the British Royal Navy between 1943-44. You can read more about its history at the Wiki entry link below.
On the afternoon of 31 May 1942, three Japanese submarines appeared some thirteen kilometres out from Sydney Harbour. Each one launched a midget submarine, aimed at the American heavy cruiser, the USS Chicago, which was anchored in the harbour. One midget was detected at about 8:00pm, but was not precisely located until it became entangled in the net; the two-man crew of the submarine blew up their own vessel to avoid capture. When the second midget was detected after 10:00pm, a general alarm was sounded. The third midget was damaged by depth charges, and the crew also committed suicide to avoid capture. The second submarine then returned fire, hitting the naval depot ship HMAS Kuttabul. Nineteen Australian men and two British sailors on the Kuttabul were killed. The submarine is believed to have then returned to its mother ship, known as I-24.
A Japanese midget submarine trying to sneak into Pearl Harbor, behind the US Navy Suppy ship 'Antares'. Actually the crew of the 'Antares' first spotted the submarine's periscope and signalled the US destroyer USS Ward. The USS Ward sank the midget (or mini-) submarine at 0635 hours, 7 December 1941 (local time).
USS Condor (AMc-14) was the minesweeper that first caught sight of a Japanese midget submarine trying to enter Pearl Harbor and alerted the destroyer USS Ward (DD-139). The Ward fired the first shots of the war, sinking the submarine before it was able to enter the harbor.
The little underwater boat on Club Penguin could be either a midget submarine or an untethered submersible. Its smallness and agility make a good case for calling it a submersible. In the Aqua Grabber instructions they call it a 'sub', which is usually short for submarine but could actually refer to either one.