SH-3 Sea KingSikorsky SH 3 Sea King helicopter model. The H 3 is a twin engine, all weather helicopter. The SH 3H model is used by the Navy Reserves to detect, classify, track and destroy enemy submarines. It also provides logistical support and a search and rescue capability. The UH 3H model is utility configured for logistical support and search and rescue missions. The VH 3A model supports the Executive Transport Mission. The first version of this workhorse