PSMM-5

🇰🇷Korea, Republic of
Tacoma Boatbuilding Company, Korea Tacoma Marine Industries Ltd., Taiwan's China Shipbuilding Co.
1979 – Present
Overview
PSMM-5
The PSMM Mk5, or Patrol Ship Multi-Mission, is a versatile multi-purpose patrol boat designed for the U.S. Navy, inspired by the Asheville-class gunboat. It features a CODOG propulsion system for operational flexibility and is equipped with advanced weapons and radar systems, serving various navies worldwide, including South Korea, Indonesia, Taiwan, and Thailand, with each variant tailored to specific mission requirements.
Specifications

General

Crew38
Guns1 76mm OTO-Melara Compact gun + 2 30mm Emerlec guns + 2 12.7mm machine guns
Beam M7.26 m
Length M50.14 m
Propulsion6 Avco-Lycoming TF-35 gas turbines with a power of 16,800 hp total - 2 propellers
Speed Knots38 knots
Main Missiles4 UGM-84 (II 2)
Displacement Tons268 tons
Research Notes

Patrol Ship Multi-Mission concept

medium

PSMM-5 is best treated as a multi-mission patrol craft concept derived from small gunboat and patrol-ship requirements.

The PSMM-5 entry describes a Patrol Ship Multi-Mission design associated with small combatant and patrol craft roles. Public information is limited and inconsistent, but the concept fits the need for a compact vessel able to patrol, interdict, and support coastal security. It is more accurately framed as a patrol craft or small combatant than a full corvette.

Compact patrol combatant with modular mission fit

medium

The type emphasizes patrol endurance, modest armament, sensors, and mission flexibility in coastal waters.

Technically, a PSMM-5-type craft would combine a small hull, naval guns or light weapons, radar, communications, and possibly tailored systems for each user. Its exact configuration depends on operator requirements. Compared with larger corvettes, it offers lower cost and simpler crewing at the expense of endurance, damage tolerance, and high-end missile or ASW systems.

Coastal patrol and maritime security role

medium

The craft is suited to presence, inspection, interdiction, and low-intensity maritime missions.

Operationally, PSMM-5-type vessels support patrol, port approaches security, fisheries or border control, and interception of small craft. They are useful when navies need many affordable hulls rather than a few high-end combatants. Their military value depends on local surveillance networks, maintenance quality, and the actual weapons and sensors fitted.

Sources & References
UNITS
NameCountryStatusService YearDescription
ROKS PSMM-5 representative
🇰🇷Korea, Republic of
DECOMMISSIONED1975 – 1996—
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