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Lockheed P-2 Neptune
Photo: USN · Wikimedia Commons · Public domain
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LockheedP-2Neptune

Maritime Patrol & ASW Aircraft · United States · 1947
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LockheedP-2Neptune

Lockheed P-2 Neptune
Lockheed P-2 Neptune Photo: USN · Wikimedia Commons · Public domain
* Absolute score — assessed within category · no era adjustment
ASW Effectiveness
75
Sensor Suite
70
Endurance
85
Range
80
Weapons Payload
65
Sonobuoy Capability
60
Search Coverage
75
Reliability
70
Technology
60
Cost-Effectiveness
80
Origin United States
ManufacturerKawasaki Heavy Industries, Lockheed Corporation
CategoryMaritime Patrol & ASW Aircraft
EraEarly Cold War
In service1947
Operators11 countries
Quantity1,177
Data Quality88%
73
Maritime Patrol & ASW Aircraft MASS Rating
6/23
Early Cold War
17/130
All-Time
Maritime Patrol & ASW Aircraft · 10 axes scored
ASW Effectiveness
75
Sensor Suite
70
Endurance
85
Range
80
Weapons Payload
65
Sonobuoy Capability
60
Search Coverage
75
Reliability
70
Technology
60
Cost-Effectiveness
80
ⓘ Regardless of era, the same scoring system applies to all units in the maritime patrol & asw aircraft category.
01 / Overview
Lockheed P-2 Neptune
Production
1947–
Quantity
1,177
Operators
💰 PERFORMANCE / PRICE ASSESSMENT Methodology ↗
MARITIME PATROL & ASW AIRCRAFT · EARLY COLD WAR
6
PERFORMANCE/PRICE
87
UNIT COST (2025 USD)
—
73
maritime patrol & asw aircraft category
ⓘ Performance/Price and MASS score are computed across all units in the maritime patrol & asw aircraft category, regardless of era.
02 / Specs & Design
◎General6MOD.6
  • Base AirframeLockheed Model 26
  • Mission Typemaritime patrol and anti-submarine warfare
  • Service Entry Year1947
  • Flight Crew7
  • Mission Crew5
  • In ServiceNo
◈Powerplant2MOD.2
  • Engine TypeWright R-3350-32W Duplex-Cyclone
  • Number of Engines2
▣Performance5MOD.5
  • Cruise Speed350 km/h
  • Service Ceiling6,827.52 m
  • Range3,540 km
  • Endurance18
  • On-Station Time12
◇Mission Systems10MOD.10
◆Armament (ASW/Strike)3MOD.3
▤Dimensions3MOD.3
  • Length27.737 m
  • Wingspan0.254 m
  • Max Takeoff Weight36,200 kg
⬢Production2MOD.2
  • Total Built1,177
  • Operators15
▲Service History4MOD.4
  • Retirement Year1984
  • Production Start1946
  • Production End1969
  • Operational StatusRetired
03 / History
SERVICE LIFESPANStill in Service
  1. 1947Production started
79
years in service
1,177
units produced
10
countries operating
ⓘ The producing country still actively operates it. 1 countries retired it.
04 / Variants
▚ WEAPON FAMILY
Lockheed P-2 Neptune 1947
// DERIVATIVES
05 / Operators
Operator Inventory3country · 42units
42active
📖 TERMS ON THIS PAGE6terms
Anti-ship missiles are guided missiles designed to engage and destroy naval vessels. They are typically used by aircraft, ships, or submarines to attack enemy ships.
A Magnetic Anomaly Detector (MAD) is an instrument used to measure and detect variations in the Earth's magnetic field, primarily for locating submarines or other large metallic objects.
A sonobuoy is a expendable, self‑contained buoy equipped with acoustic or other sensors, deployed from aircraft to detect and track submarines or surface vessels.
Enables real-time sharing of position, targeting, and sensor data among aircraft and platforms for coordinated combat operations.
These terms are listed automatically because they appear on this page.full encyclopedia →
📚 Sources
📖 ENCYCLOPEDIA Browse the Maritime Patrol & ASW Aircraft entry →