| Helicopter Sea Combat Squadron Four (HSC-4) | |
|---|---|
_patch_2012.png) HSC-4 Insignia | |
| Active | 30 June 1952 – present |
| Country |  United States of America |
| Branch |  United States Navy |
| Type | Helicopter Sea Combat |
| Role | Logistics, Strike, Medevac, HA/DR, Anti-Surface Warfare (ASUW) Combat Search & Rescue (CSAR) Search & Rescue (SAR) Special Operations (SpecOps) Vertical replenishment (VERTREP) |
| Part of | CVW-2 |
| Garrison/HQ | NAS North Island |
| Nickname(s) | Black Knights |
| Engagements | Vietnam War Operation Formation Star Operation Restore Hope Operation Southern Watch 1994 North Korean nuclear crisis Operation Enduring Freedom Operation Iraqi Freedom |
| Aircraft flown | |
| Utility helicopter | HO4S-3 SH-34 Seabat SH-3 Sea King SH-60 Seahawk |
Helicopter Sea Combat Squadron Four (HSC-4) (previously Helicopter Anti-Submarine Squadron Four (HS-4)), also known as the Black Knights, is a multi-role combat helicopter squadron of the United States Navy based at Naval Air Station North Island which operates Sikorsky MH-60S Seahawk helicopters deployed aboard aircraft carriers. The squadron was originally established as HS-4 on 30 June 1952 at U.S. Naval Auxiliary Landing Field Imperial Beach with the Sikorsky HO3S-1 and was redesignated HSC-4 on 29 March 2012. It is currently assigned to Carrier Air Wing Two (CVW-2) which deploys aboard USS Carl Vinson (CVN-70).