Main Deck - The main continuous deck of a ship running from fore to aft; the principle deck; the deck from which the freeboard is determined; usually the deck immediately below the shelter or weather deck.
Category: - Maritime

MAJAID - Major Air Disaster: An aircraft incident occurring in Canada which, because of the number of people involved, requires augmentation of established search and rescue resources. This is any plane crash involving more than six people is referred to as a Major Air Disaster. In the event of a MAJAID, every available SAR Tech is loaded onto the first airplane and flown to the crash site. Once the SAR Techs parachute to the ground, the senior SAR Tech takes over responsibility for the scene; others set up triage and treatment facilities."catastrophe aéronautique"
Category: - Maritime - Acronym

Major Air Disaster - An aircraft incident occurring in Canada which, because of the number of people involved, requires augmentation of established search and rescue resources. This is any plane crash involving more than six people is referred to as a Major Air Disaster. In the event of a MAJAID, every available SAR Tech is loaded onto the first airplane and flown to the crash site. Once the SAR Techs parachute to the ground, the senior SAR Tech takes over responsibility for the scene; others set up triage and treatment facilities."catastrophe aéronautique"
Category: - Risk - SAR

Major Search And Rescue Operations - (a) Aeronautical and maritime search and rescue incidents where primary maritime and/or primary aeronautical search and rescue units are tasked on an incident for more than four calendar days; (b) incidents which the search and rescue region commander assesses as being potentially sensitive; or (c) special cases, as directed by the National Defence Headquarters. "opérations majeures de recherche et sauvetage"
Category: - Risk - SAR

Manhole - A hole cut in a bulkhead, tank top, etc., to allow the passage of a man.
Category: - Maritime

Manifest - A document containing a full list of the ship's cargo, extracted from the bills of lading.
Category: - Maritime

Manning Scales - The minimum number of officers and crew members that can be engaged on a ship to be considered as sufficient hands with practical ability to meet every possible eventuality at sea.
Category: - Maritime

MANOT - Missing Aircraft Notice
Category: - Acronym - SAR

Map - A depiction of all or part of the earth or other geographic phenomenon as a set of symbols and at a scale whose representative fraction is less than 1:1. A digital map has had the symbols geocoded and stored as a data structure within the map database.
Category: - GIS

Map projection - A mathematical model for converting locations on the earth's surface from spherical to planar coordinates, allowing flat maps to depict three dimensional features. Some map projections preserve the integrity of shape; others preserve accuracy of area, distance, or direction.
Category: - GIS

MARB - Maritime Assistance Request Broadcast
Category: - Maritime - Acronym - SAR

Margin Plate - The outboard row of plates of the inner bottom, connecting to the shell plating to the bilge.
Category: - Maritime

Marine Controller - The Coast Guard Officers who work at the Rescue Coordination Centres are referred to as Marine Controllers. They are responsible for tasking resources on any marine emergencies which occur during their shift. They work in conjunction with the duty Air Controller.
Category: - Maritime

Marine Wind Warnings - Small Craft Warning - issued if winds are forecast to be in the range at 20 to 33 knots inclusive Gale Warning - issued if winds are forecast to be in the range of 34 to 47 knots inclusive Storm Warning - issued if the winds are forecast to be in the range of 48 to 63 knots inclusive Hurricane Force Wind Warning - issued for winds of 64 knots or greater
Category: - Maritime - Risk - Weather

MARIS - Maritime Activity and Risk Investigation System (MARIS) is a GIS that was developed by MARIN. MARIS is used to display traffic, incidents and contributing factors spatially, and help the users investigate the risks associated with different boating activities.
Category: - Maritime - Risk - GIS - Acronym

Maritime Activity and Risk Investigation System - Maritime Activity and Risk Investigation System (MARIS) is a GIS that was developed by MARIN. MARIS is used to display traffic, incidents and contributing factors spatially, and help the users investigate the risks associated with different boating activities.
Category: - Maritime - Risk

Maritime Incident - A search and rescue incident involving a vessel or a person, including the medical evacuation of person(s) from a vessel. "incident maritime"
Category: - Maritime - Risk - SAR

Maritime Institute for Research and Industrial Development - The Maritime Institute for Research and Industrial Development (MIRAID) is a Washington DC based non-profit corporation formed in September 1978. MIRAID represents United States-flag shipping companies engaged in all aspects of America's foreign and domestic shipping trades which have collective bargaining relationships with the International Organization of Masters, Mates & Pilots.
Category: - Maritime - Risk

Maritime Safety Information - Maritime Safety Information broadcasts comprise of distress alerts, SAR information, navigational and weather warnings, as well as forecasts and are received in the Global Maritime Distress and Safety System (GMDSS).
Category: - Maritime - SAR

Marlinspike - A pointed tapering tool which is used in separating strands of rope or cable in splicing.
Category: - Maritime