Wildcat was the main shipboard fighter when the US entered WWII. The F4F was barrel-shaped, with angular wingtips and rudder and a narrow-track undercarriage. The F4F was well-armed and reliable, and was a natural shipboard aircraft, probably more easier to land on a carrier deck than on land.
“TYPHOON” class ballistic missile submarine is the biggest submarine in the world by far .It was one of the most feared weapons of the Cold War. The submarine's design includes features for traveling under ice and breaking ice. Each submarinecan carry twenty long-range ballistic missiles with nuclear warheads.