Kawasaki P-1

The maritime patrol jet built for modern anti-submarine operations.

Overview

Kawasaki Japan ICAO: P1 2007–Present Active $164 million (2015)

The Kawasaki P-1 is a Japanese maritime patrol aircraft developed to replace older turboprop patrol platforms. Introduced in the 2010s, it is designed for anti-submarine warfare and maritime surveillance. The aircraft represents a domestically developed patrol jet.

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Specifications

Units
Engine
4 × IHI Corporation F7
Engine type
Turbofan
Thrust
4 × 13,000 lbf · 58 kN
Avionics
Toshiba HPS-106 AESA
Wing tips
No winglets
Seats
13
Crew
—
Cabin width
—
Cabin height
—
Cabin length
—
Exterior length
124 ft 8 in  ·  38.00 m
Tail height
39 ft 8 in  ·  12.10 m
Fuselage diameter
11 ft 6 in  ·  3.50 m
Wing span
116 ft 2 in  ·  35.40 m
Baggage volume
—
Gross weight
—
Empty weight
—
Max takeoff weight
175,500 lb  ·  79,500 kg
Max landing weight
—
Max payload
91,500 lb  ·  41,600 kg
Fuel capacity
Max cruise speed
538 kt  ·  619 mph  ·  996 km/h
Maximum speed
—
Cruise speed
—
Approach speed
—
Range
4,300 nm  ·  4,950 mi  ·  7,960 km
Fuel burn
—
Ceiling
44,360 ft  ·  13,500 m
Rate of climb
—
Takeoff distance
—
Landing distance
—
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3 JMSDF Kawasaki P 1 in flight with Mount Fuji in the background

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Operational Context

Kawasaki P-1 — maritime patrol and anti-submarine warfare aircraft

The P-1 first flew in 2007 and entered service in 2013 with the Japan Maritime Self-Defense Force. It was designed from the outset as a dedicated maritime patrol aircraft rather than a modified transport. The airframe features a high-mounted wing and four-engine configuration optimized for low-speed loiter.

Powered by four IHI F7 turbofan engines producing approximately 13,000 pounds of thrust (58 kN) each, the P-1 cruises at around 450 knots (833 km/h). Maximum takeoff weight exceeds 175,000 pounds (79,379 kg). The aircraft carries sonar buoys, torpedoes, and maritime surveillance systems.

The P-1 provides long-range patrol capability over maritime areas. Its development marked a significant achievement in Japan’s aerospace industry. The aircraft remains in active service with ongoing incremental upgrades.