Huey Helicopters and Navy River Patrol Boats: Separate Operational Domains

The premise of the question contains a misconception: **UH-1 "Huey" helicopters did not routinely team up with Navy river patrol boats (PBRs) as a standard operational pairing.** They served in different branches, environments, and mission sets during the Vietnam War era.

Huey (UH-1 Iroquois)

• Branch: Primarily U.S. Army (also Marine Corps, Air Force).
• Role: Utility—troop transport (slicks), medevac (Dustoff), gunship (Hogs/Cobras), command & control, resupply.
• Environment: Land-based; operated from firebases, airfields, ships (limited).
• Riverine Ops: Occasionally supported Army/Navy riverine forces (e.g., Mobile Riverine Force in Mekong Delta) with air assault, gunfire, medevac—but not integrated with PBRs daily.

Navy River Patrol Boats (PBR - Patrol Boat, River)

• Branch: U.S. Navy (River Patrol Force, Task Force 116).
• Role: Interdiction, patrol, search & seizure, insert/extract SEALs/RECON on inland waterways (Mekong Delta, Saigon River, canals).
• Environment: Riverine—shallow draft, waterjet drive, 25+ knots, twin .50 cal, M60, grenade launcher.
• Air Support: Called in Army/Marine Hueys, Cobras, or Air Force A-1/A-37 for CAS; Navy HAL-3 "Seawolves" (UH-1 gunships) provided dedicated helo support.

Actual Collaboration

Coordination occurred at the **tactical level** during joint operations (e.g., SEAL insertions, cordon-and-search). Navy HAL-3 Seawolves (UH-1B/M gunships) worked closely with PBRs—but these were Navy Hueys, not Army. The Army's 1st Aviation Brigade supported the Mobile Riverine Force (Army 9th Inf Div + Navy TF 117) but operated from land bases.

In short: Hueys and PBRs operated in the same theater, sometimes in coordinated ops, but not as a fixed "team-up." Their roles, chains of command, and logistics were distinct.