The Kaman SH-2 Seasprite is a ship-based helicopter originally developed in the late 1950s as a fast utility helicopter for the United States Navy. In the 1970s, anti-submarine, anti-surface threat capabilities were added to the design, including over-the-horizon targeting, resulting in modifying most existing UH-2 models to the SH-2 Seasprite.
This aircraft extends and increases shipboard sensor and weapon capabilities against several types of enemy threats, including submarines of all types, surface ships and patrol craft that may be armed with anti-ship missiles. It served with the U.S. Navy from the 1960s until the last SH-2G helicopters were retired in 2001.
In 1956, the U.S. Navy launched a competition to meet its requirement for a compact, all-weather multipurpose naval helicopter.
In 1960, the Royal Canadian Navy announced that the HU2K was the frontrunner for a large anti-submarine warfare contract; the Canadian Treasury Board had approved an initial procurement of 12 units for $14.5 million.