page_title: Neptune Mission
section_title: Synopsis
hierarchical_section_title: Neptune Mission / Synopsis
caption_attribution_description: English: Lockheed Neptune at Greenwood Military Aviation Museum
context_page_description: Neptune Mission is a 1958 30-minute Canadian short documentary film produced by the National Film Board of Canada for the Canadian Broadcasting Corporation television series, Perspective. The film documents the submarine-hunting mission of the RCAF Neptune aircraft on Canada's Atlantic coastline during the Cold War. Neptune Mission is produced by David Bairstow, and directed by Walford Hewitson.
context_section_description: During the Second World War, from its Halifax, Nova Scotia headquarters, the Royal Canadian Air Force PBY Canso aircraft, along with the Royal Canadian Navy (RCN), were heavily involved in anti-submarine warfare (ASW) directed against Nazi U-boat attacks on convoy and coastal shipping. In postwar operations, building on the success of its wartime missions, the RCAF continued to maintain anti-submarine capability from their Greenwood, Nova Scotia base.
  In 1958, during the Cold War, the threat of Soviet nuclear-powered submarines led the RCAF to acquire Lockheed P2V7 Neptune aircraft. The advent of airborne radar, sonar and magnetic anomaly detection (MAD)-equipped aircraft such as the Neptune, made for a potent counter. The armament on the P2V7 included two torpedoes, mines, depth charges, bombs carried internally plus unguided rockets mounted externally underwing.
  On annual North Atlantic Treaty Organization (NATO) exercises, the RCAF Neptune crews worked closely with naval forces from both Canada and the United States, and through joint operations, continued to train for operational readiness. On a typical training mission, an RCAF crew will receive instructions from its Halifax headquarters, and fly in a combined aerial and naval mission using airborne MAD/sonobuoy equipment to detect a submarine attempting to penetrate the naval forces protecting a high value target such as a convoy or aircraft carrier task force.
  In the 1958 Delta 54 training exercise, an RCAF Neptune (VN-123) flies a precise pattern over the Atlantic Ocean when a radar contact of a "spook" is made. Two destroyers take up the chase, leaving the task force and joining Neptune VN-123. Using sonobuoys, the Neptune relays an exact location of the contact to the destroyers that take up station over the suspected submerged enemy submarine, now forced to either escape or curtail its threat to the task force. The exercise concludes with another RCAF Neptune relieving VN-123 to return to its base in Nova Scotia.
caption: A Lockheed Neptune in the 1950s RCAF colour scheme is on display at the Greenwood Military Aviation Museum, CFB Greenwood, Nova Scotia.[5]
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