美国海军海洋系统司令部与波音飞机公司签订了38000万美元的合同,正式开始研制装备现役及未来的美国海军潜艇(SSN-637,SSN-638及拟议中的SSN-21)的新型远程反潜武器。这种新式武器就是古德伊尔航宇公司生产的现役UUM-44A“萨布洛克”导弹的后继型号,被称为“海长矛”。由于“萨布洛克”技术落后,所以对其后 The U.S. Navy Marine Systems Command and the Boeing Aircraft Company signed a $ 380 million contract to formally start developing a new long-range anti-submarine weapon to equip active and future US Navy submarines (SSN-637, SSN-638 and proposed SSN-21) . This new type of weapon is the successor to the active UUM-44A “Satlock” missiles manufactured by Goodyear Aerospace, known as the “Sea Spear.” As “Satlock” technology behind, so after