Торпеда Spearfish: характеристики, модернизация и применение.

A microprocessor enables the torpedo to make autonomous tactical decisions during the attack. It has a powerful blast warhead, triggered by either contact detonation (against a submarine hull) or an acoustic proximity fuse (for under keel detonation against ships). A standoff detonation under the keel enhances blast effects against surface ships through the amplification of stress resulting from the interaction of the explosion's products and the flexible structure of the ship.

In a typical engagement, Spearfish will run out wire guided to the general vicinity of the target and then conduct a covert passive search. The high capacity guide wire system, specifically designed to match the Spearfish's manoeuvre and speed envelope, provides two way data exchange between the torpedo and launch submarine, maximising the submarine's organic sensor and combat control capabilities. Once at close range the Spearfish uses active sonar to classify and home in on its target. High power transmissions and sophisticated signal processing enable Spearfish to accurately discriminate targets from background noise and ensure high resistance to acoustic countermeasures and/or evasive manoeuvres. Should Spearfish fail to hit the target on its first attack, it automatically selects an appropriate re attack mode until it successfully concludes the engagement.

Tactical software has been extensively refined through real time, hardware in the loop simulations and demonstrated in more than 500 in water trials and exercise firings.

The production contract for the Spearfish Torpedo was placed with GEC Marconi Underwater Systems Ltd (now BAE Systems) in 1983, following a development programme lasting several years. Spearfish entered full production in 1988.

The first Spearfish were deployed in 1992, with deliveries completed in 2003; the number ordered has not been revealed. Spearfish torpedoes are stored and serviced at Beith Ordnance Storage facility in North Ayrshire.

In 2009, an upgrade programme began, leading to further sophisticated advances in Spearfish's homing, warheads, tactical and fuelling systems, as well as an upgraded guidance link. This will last until 2019. On 15 December 2014, the Ministry of Defence awarded BAE Systems a £270 million contract to upgrade the Spearfish torpedo. The upgrade includes a new insensitive munition warhead from TDW, a change to the fuel system to improve safety, full digitisation of the weapon and a new fibre optic guidance link to improve performance. The upgraded 'MOD 1' torpedoes will enter service between 2020 and 2024. In February 2021 test fired 3 upgraded 'MOD 1' specification Spearfish torpedoes as part of their final testing before entry into service with the Royal Navy.