"Approved" means approved by the Board of Steamship
Inspection.
"Aviation Group" means the Transport Canada Aviation Group,
responsible for aviation safety.
"Board" means the Board of Steamship Inspection authorized
under the Act.
"Bridge" means the location of the command position of the
ship.
"Design Helicopter" means the most demanding helicopter
used to determine the dimensions, bearing strength and other aspects of
the helicopter deck design, which has been identified from the
helicopters the deck is intended to serve.
"Downwash" means the volume of air displaced downward by
the lifting rotor, which, when it strikes the helicopter deck or other
solid surface, causes a turbulent outflow from beneath the helicopter.
"Ground Effect" means the improvement in flight capability
that develops whenever a helicopter flies or hovers near the helicopter
deck or other solid surface, as a result of the cushion of denser air
built up between the surface and the helicopter by the air displaced
downward by the lifting rotor.
"Harmful Substance" means any substance subject to control
under the Canada Shipping Act and the Arctic Waters Pollution
Prevention Act that, if introduced into the sea, is liable to create
hazards to human health, to harm living resources and marine life, to
damage amenities or to interfere with other legitimate uses of the sea.
"Helicopter" means any heavier-than-air aircraft supported
in flight by the reactions of the air on one or more power-driven rotors
on a substantially vertical axis.
"Helicopter Approach-and-Departure Area" means the area
where a helicopter may safely approach and manoeuvre during any part of
the landing or takeoff operation.
"Helicopter Deck" means a helicopter landing and takeoff
area aboard a ship.
"Helicopter Operations Officer" means the senior aviation
officer aboard ship.
"Helicopter Overall Length" means the distance between the
extremities of the helicopter including the rotors.
"Inspector" means a steamship inspector appointed under the
provisions of the Act.
"Jet A-1 Fuel" means an aviation turbine fuel having a
minimum flashpoint of 38°C (approved closed-cup test)
"Jet B (JP4) Fuel" means an aviation turbine wide-cut fuel
that has a minimum flashpoint estimated to be between -2°C and -23°C
(approved closed-cup test) and a Reid vapour pressure such that, at
normal temperature and pressure, the vapour-air mixture above the liquid
in a closed tank may settle in the flammability range.
"JP5 (High Flashpoint) Fuel" means an aviation turbine fuel
having a minimum flashpoint of 60° (approved closed cup-test)
"Limited Obstacle Area" means an area on a ship adjacent to
the helicopter deck and within which the height of objects is limited.
"Markers" means objects displayed above deck level in order
to indicate an obstacle or delineate a boundary.
"Markings" means symbols or groups of symbols displayed on
the surface of the deck in order to convey aeronautical information.
"Obstacle" means any fixed obstacle, whether temporary or
permanent, any mobile obstacle, or any part thereof, located on an area
intended for the surface movement of aircraft or extending above a
defined surface intended to protect aircraft in flight.
"Regional Manager" means the Manager, Ship Safety, for a
Canadian Coast Guard Region.
"Ship" means any type of vessel, boat or craft designed,
used, or capable of being used, solely or partly, for marine navigation,
without regard to method, or lack, of propulsion.
"Ship Safety Branch" means the branch of Transport Canada
Marine Group responsible for ship safety.
"Winching" means the transfer of personnel or materiel
between the internal spaces of a helicopter and a ship’s deck by means
of a hoisting mechanism fitted in the helicopter.
"Winching Area" means the clear deck area over which a
helicopter may hover for winching personnel and materiel to and from a
ship, where no landing facilities are provided.