Internationally, aerial surveillance is widely adopted and considered to be the most effective method for the detection of oil spills. The presence of the NASP surveillance aircraft acts as a deterrent by discouraging illegal discharges of pollution at sea.
Since assuming responsibility of NASP in December 2003, TC has been proactive in augmenting the effectiveness of the program. It has increased the frequency of pollution patrol hours and expanded patrols over areas not historically included, such as in the Arctic. Other TC initiatives include: multi-tasking with other Government Departments to ensure each surveillance hour is as productive as possible, and upgrading its pollution surveillance equipment to ensure Canada has the capability to observe, analyze, record and report marine pollution and other sea based activities.

Regular aerial surveillance flights have contributed significantly to the decrease in oil discharges, as ships are increasingly aware that their illicit polluting activities can be detected. The NASP aerial surveillance fleet today consists of three recently modernized aircraft that are strategically placed across the Country. These aircraft are the primary means of monitoring shipping activities and detecting illegal discharges in all waters under Canadian jurisdiction. Two TC owned and operated Dash-8 aircraft are located in Moncton, NB and Vancouver, BC. There is also one TC owned and operated Dash-7, which is primarily located in Ottawa, ON but is also collocated to Iqaluit, NU for the Arctic-shipping season.
There are also other aircraft contracted by other Government Departments used to supplement the NASP. Through an agreement with the Department of Fisheries and Oceans, TC uses Provincial Airlines Limited (PAL) aircraft for pollution patrols in waters off Newfoundland and Labrador. The aircraft involved with the NASP act as a significant deterrent to would-be polluters as it has become widely known that Canada is watching better than ever before over all three oceans. The ongoing presence of pollution patrols can also be a deterrent to potential polluters in much the same way as the visible presence of police cruisers can reduce speeding on our highways.
Evidence gathered by the NASP crews is forwarded to the appropriate departmental and Environment Canada (EC) regional offices to enforce the provisions of Canadian legislation applicable to illegal discharges from ships.
TC works closely with EC through a memorandum of understanding in the surveillance of sea based activities such as pollution, ice and marine security. Both Government Departments believed in partnering to benefit from multitasking, which resulted in the creation of the Marine Aerial Reconnaissance Team (MART). The MART provides economical and operational advantages for TC and EC by providing timely, accurate and useful information from aerial surveillance operations. Key government departments and agencies rely on this information to fulfill their respective marine mandates and ensure positive outcomes in such areas as security, safe and accessible Canadian waterways, and environmentally sustainable economic development.
TC also uses satellite surveillance to detect illegal discharges at sea. Satellite images are provided by EC's Integrated Satellite Tracking of Pollution program (I-STOP). I-STOP is used as an early warning system to help personnel direct the aircraft to locations of potential pollution incidents in near real time. Satellite images are used to search for oil-like signatures (anomalies) on the ocean's surface. Identified anomalies are then examined by an aircraft to confirm the spill, identify the source if possible, and gather evidence for prosecution.
The aim of the NASP is to maximize every patrol hour in the air, by relying on the functionality of the NASP's state-of-the-art remote sensing systems and the MART's expertise coupled with ongoing programs such as I-STOP. This combines to make Canada a world leader in marine aerial pollution surveillance and reconnaissance. TC is committed to continuously enhancing the protection of the Canadian marine environment from ship-source pollution, ultimately protecting Canada's ocean resources and fragile marine ecosystems for the benefit of coastal communities and all Canadians.
For more information on the NASP, please refer to Transport Canada's Media Room.