Neptune (Total: 244, Canadian: 25, Group 0)

Lockheed Neptune

(RCAF Photo via James Craik)(Source Harold A Skaarup Web Page)
Lockheed CP-122 Neptune, RCAF (Serial No. 24106).

The Lockheed P-2 Neptune (designated P2V by the United States Navy prior to September 1962) was a maritime patrol and anti-submarine warfare (ASW) aircraft. It was developed for the US Navy by Lockheed to replace the Lockheed PV-1 Ventura and PV-2 Harpoon, and was replaced in turn by the Lockheed P-3 Orion. Designed as a land-based aircraft, the Neptune never made a carrier landing, but a small number were converted and deployed as carrier-launched, stop-gap nuclear bombers that would have to land on shore or ditch. The type was successful in export, and saw service with several armed forces.

The Canadian version of the Lockheed Neptune (P2V7) served as an anti-submarine, anti-shipping and maritime reconnaissance aircraft in the RCAF Maritime Air Command from 1955, replacing the Avro Lancaster maritime aircraft. The Canadian P2V7 was fitted with piston engines, although the Canadian Neptunes, without the underwing Westinghouse J34 jet engine pods which were retrofitted in 1959, similar to those fitted to US Navy variants. Armament included two torpedoes, mines, depth charges, bombs carried internally plus unguided rockets mounted externally underwing. A total of 25 Neptunes served with RCAF Nos. 404, 405 and 407 squadrons until 1960. With the unification of the Canadian Forces in 1968, the Neptune was retired and retroactively re-designated the CP-122. The RCAF Neptune was replaced by the Canadair CP-107 Argus in the same year. Wikipedia and Harold Skaarup web page

YouTube Neptune Maritime Patrol

Wikipedia Neptune Maritime Patrol

unvetted Source Harold A Skaarup Web Page

RCAF P2V-7 Neptune Serials - Kestrel Publications

Neptune P2V-7 serial 24101

s/n 24101

c/n 826-8001

24101

Known Units:

Originally delivered without jet engines, in overall dark blue scheme, coded "VN*101". Aircraft with this serial marked on display at CFB Greenwood, NS.is not the RCAF Neptune 24101. It is an ex-US Navy a/c. The Neptune at CYZX is actually a former U.S.N. EP-2H, Bu.No. 147069 and Lockheed c/n 7219
last update: 2024-December-25

RCAF Aircraft Record Card

1955-May-06 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24102

s/n 24102

c/n 826-8002

24102

Known Units:

Used by No. 407 (MP) Squadron at RCAF Station Comox, BC.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-March-30 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24103

s/n 24103

c/n 826-8003

24103

Known Units:

last update: 2025-June-25

RCAF Aircraft Record Card

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24104

s/n 24104

c/n 826-8004

24104

Known Units:

Served with No. 407 (MR) Squadron at RCAF Station Comox, BC.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-April-09 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24105

s/n 24105

c/n 826-8005

24105

Known Units:

last update: 2025-June-25

RCAF Aircraft Record Card

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24106

s/n 24106

c/n 826-8006

24106

Known Units:

last update: 2025-June-25

RCAF Aircraft Record Card

1955-April-30 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24107

s/n 24107

c/n 826-8007

24107

Known Units:

last update: 2025-June-25

RCAF Aircraft Record Card

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24108

s/n 24108

c/n 826-8008

24108

Known Units:

last update: 2025-June-25

RCAF Aircraft Record Card

1955-May-14 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24109

s/n 24109

c/n 826-8009

24109

Known Units:

last update: 2025-June-25

RCAF Aircraft Record Card

1955-May-15 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24110

s/n 24110

c/n 826-8010

24110

Known Units:

Used by No. 404 (MP) Squadron at RCAF Station Greenwood, NS. First used in overall dark blue scheme, coded "SP*110". To US civil register as N14447. converted to fire bomber b y 1972, carried "Tanker 11" markings. Crashed 3 June 2012.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-May-23 Taken on Strength CASPR TOS date 23 Mar 1955 changed to match Griffin 2005 Numerical Registry 23 May 1955. 2020-10-11
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155 | 2005 209

Neptune P2V-7 serial 24111

s/n 24111

c/n 826-8011

24111

Known Units:

Used by No. 405 (MP) Squadron, at RCAF Station Greenwod, NS, in dark blue finish, coded "VN*111". Later used by No. 407 (MP) Squadron at RCAF Station Comox, BC.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-May-27 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24112

s/n 24112

c/n 826-8012

24112

Known Units:

Used by No. 405 (MP) Squadron, at RCAF Station Greenwod, NS.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-June-03 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24113

s/n 24113

c/n 826-8013

24113

Known Units:

Ex USN number 135593. Stored at Saskatoon when struck off. Sold to California Airframe Parts on 2 March 1970. Registered to Flying Firemen in Canada as CF-MQW in 1971, but not taken up. To Johnson Flying Service in the US, registered as N14448, operated as Tanker A16 from 1973. Crashed at Wenatchee, Washington in 1975. Rebuild using parts from ex USN 147957, for display purposes only. Preserved at Pima Air Museum.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-June-19 Taken on Strength 2019-08-20
1970-March-02 Struck off Strength Struck off, to Crown Assets Disposal Corporation. CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155 | 2005 209

Neptune P2V-7 serial 24114

s/n 24114

c/n 826-8014

24114

Known Units:

Used by No. 404 (MP) Squadron at RCAF Station Greenwood, NS. Coded "SP*114" in 1956.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-June-06 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24115

s/n 24115

c/n 826-8015

24115

Known Units:

With No. 405 Squadron at RCAF Station Greenwood, NS in 1956, coded "VN*115", dark blue overall, no jets. With No. 2 (Maritime) Operational Training Unit when it crashed Summerside 22 Jan 1965. Only RCAF Neptune crash.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-March-17 Taken on Strength 2022-02-07
1965-March-25 Struck off Strength 2019-08-20

📙 JA Griffin (2005: Smith, Castle): 1968 476

Neptune P2V-7 serial 24116

s/n 24116

c/n 826-8016

24116

Known Units:

With No. 404 (MP) Squadron at RCAF Station Greenwood, NS in 1956 in dark blue finish, coded SP*226".
last update: 2024-December-25

RCAF Aircraft Record Card

1955-July-05 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24117

s/n 24117

c/n 826-8017

24117

Known Units:

Note that the preserved aircraft at CFB Greenwood carrying this serial is actually ex USN EP-2H, serial number. This is same a/c as VN+101, except originally displayed as 24117
last update: 2024-December-25

RCAF Aircraft Record Card

1955-June-28 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24118

s/n 24118

c/n 826-8018

24118

Known Units:

last update: 2025-June-25

RCAF Aircraft Record Card

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24119

s/n 24119

c/n 826-8019

24119

Known Units:

Used by No. 405 (MP) Squadron, at RCAF Station Greenwod, NS.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-June-30 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24120

s/n 24120

c/n 826-8020

24120

Known Units:

With No. 407 Squadron.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-July-28 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24121

s/n 24121

c/n 826-8021

24121

Known Units:

Used by No. 405 (MP) Squadron, at RCAF Station Greenwod, NS.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-August-01 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24122

s/n 24122

c/n 826-8022

24122

Known Units:

Used by No. 404 (MP) Squadron at RCAF Station Greenwood, NS. Coded "SP*122" in 1956.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-August-07 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24123

s/n 24123

c/n 826-8023

24123

Known Units:

Used by No. 405 (MP) Squadron, at RCAF Station Greenwod, NS. Later used by No. 407 (MP) Squadron at RCAF Station Comox, BC.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-August-22 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24124

s/n 24124

c/n 826-8024

24124

Known Units:

Used by No. 404 (MP) Squadron at RCAF Station Greenwood, NS
last update: 2024-December-25

RCAF Aircraft Record Card

1955-August-31 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155

Neptune P2V-7 serial 24125

s/n 24125

c/n 826-8025

24125

Known Units:

Used by No. 407 (MP) Squadron at RCAF Station Comox, BC.
last update: 2024-December-25

RCAF Aircraft Record Card

1955-September-22 Taken on Strength 2022-02-07
1970-March-02 Struck off Strength CASPR SOS date 31 July 1968 changed to match Griffin 2005 Numerical Registry date 02 Mar 1970. CASPR file "Neptune CP-122 - Listing" by FJ Paradie notes "all Neptunes withdrawn from service 24 May 1969", supporting SOS date 1970. 2020-10-11

📙 JA Griffin (2005: Smith, Castle): 1968 476 | 2005 155 | 2005 209

General Characteristics
Crew:	7-9
Length:	91 ft 8 in (27.94 m)
Wingspan:	103 ft 10 in (31.65 m)
Height:	29 ft 4 in (8.94 m)
Wing area:	1000 sq ft (93 m2)
Empty weight:	49935 lbs (22650 kg)
Max takeoff weight:	79,985 lb (32,640 kg)
Fuel capacity:	2820 imp gal (12690 L; 3380 US gal)
Powerplant:	2 x Wright R-3350-32W Duplex-Cyclone 18 cylinder air-cooled turbo-compound radial engines, 3700 hp (2,800 kW) each. Anti-detonation fluid (ADI) available. 2x Westinghouse J-34-WE-34 turbojet engines, 3400 lbf (15kN) thrust each.
Propellers:	4-bladed metal variable-pitch, constant speed, fully reversing propeller.
Performance
Maximum speed:	430 mph (695 km/h, 375 kn)
Cruise speed:	175 mph (280 km/h, 152 kn)
Range:	3780 mi (6080 km, 3285 nmi)
Endurance:	12 hrs
Service ceiling:	22,000 ft (6705 m)
Armament
Bomb load:	10,000 lbs (4535 kg)
Internal load	44 and Mark 46 torpedoes. 350 lb (160 kg) Mark 54 depth bombs and practice bombs. Sonobuoys: 32 Mark 400 Signal Underwater Sound Charges (SUS).
External load:	8 underwing pylons: depth charges or 5 in. HVAR CRV-7 rockets
Avionics
Radar systems:	AN/APS-20 search radar.
Passive sensors:	AN/AQA-5 Jezebel Low Frequency Analyzer and Recorder sonobuoy sound analyzer to identify distance and type of vessel AN/ASQ-8 Magnetic Anomaly Detector (MAD) on extended tail boom to measure presence of iron from a vessel's AN/ALR-8 radio direction finding and interception to triangulate location of radio transmitters AN/APA-74 radar signal pulse identification for identifying and locating submarine radar transmissions
Active sensors:	AN/AQA-3 Julie - explosive echo ranging 70,000,000 candle-power searchlight
Navigation:
Other:	70 million candlepower searchlight for night visual identification AN/ARC-505 VHF transceiver AN/ARC-552 UHF transceiver AN/ARC 505 (Collins 618T) HF single sideband radio plus standby AN/ARC 38

Note:

A turbo-compound engine is a reciprocating engine that employs a turbine to recover energy from the exhaust gases. Instead of using that energy to drive a turbocharger as found in many high-power aircraft engines, the energy is instead sent to the output shaft to increase the total power delivered by the engine. The turbine is usually mechanically connected to the crankshaft, as on the Wright R-3350 Duplex-Cyclone, but electric and hydraulic power recovery systems have been investigated as well.

As this recovery process does not increase fuel consumption, it has the effect of reducing the specific fuel consumption, the ratio of fuel use to power. Turbo-compounding was used for commercial airliners and similar long-range, long-endurance roles before the introduction of turbojet engines. Examples using the Duplex-Cyclone include the Douglas DC-7B and Lockheed L-1049 Super Constellation, while other designs did not see production use. source: Wikipedia

CASPIR Resources

External Resources

Lockheed Neptune Specifications

Neptune P2V-7 serial 24101

Neptune P2V-7 serial 24102

Neptune P2V-7 serial 24103

Neptune P2V-7 serial 24104

Neptune P2V-7 serial 24105

Neptune P2V-7 serial 24106

Neptune P2V-7 serial 24107

Neptune P2V-7 serial 24108

Neptune P2V-7 serial 24109

Neptune P2V-7 serial 24110

Neptune P2V-7 serial 24111

Neptune P2V-7 serial 24112

Neptune P2V-7 serial 24113

Neptune P2V-7 serial 24114

Neptune P2V-7 serial 24115

Neptune P2V-7 serial 24116

Neptune P2V-7 serial 24117

Neptune P2V-7 serial 24118

Neptune P2V-7 serial 24119

Neptune P2V-7 serial 24120

Neptune P2V-7 serial 24121

Neptune P2V-7 serial 24122

Neptune P2V-7 serial 24123

Neptune P2V-7 serial 24124

Neptune P2V-7 serial 24125

Lockheed Neptune

Lockheed Neptune