westland sea king has mk.6. drawing of anti-submarine warfare and utility helicopter.

1982 air aircraft anti army asw attack australia aviation british combat defense drawing engine falklands force gnome has helicopter history hms hu5 illustration india invincible king kingdom line military mk42 mk6 navy outline profile ran rescue rollsroyce royal s61 sar sea search sh3 side sikorsky submarine technology transportation united vector war warfare weapon westland wing