For the purpose of this Code, unless expressly provided
otherwise, the terms used therein have the meanings defined in the
following paragraphs. Additional definitions are given in the general
parts of the various chapters.
1.4.1 "Administration" means the Government of
the State whose flag the craft is entitled to fly.
1.4.2 "Air-cushion vehicle" (ACV) is a craft such
that the whole or a significant part of its weight can be supported,
whether at rest or in motion, by a continuously generated cushion
of air dependent for its effectiveness on the proximity of the surface
over which the craft operates.
1.4.3 "Auxiliary machinery spaces" are spaces
containing internal combustion engines of power output up to and including
110 kW driving generators, sprinkler, drencher or fire pumps, bilge
pumps, etc., oil filling stations, switchboards of aggregate capacity
exceeding 800 kW, similar spaces and trunks to such spaces.
1.4.4 "Auxiliary machinery spaces having little
or no fire risk" are spaces such as refrigerating, stabilizing, ventilation
and air conditioning machinery, switchboards of aggregate capacity
800 kW or less, similar spaces and trunks to such spaces.
1.4.5 "Base port" is a specific port identified
in the route operational manual and provided with:
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.1 appropriate facilities providing continuous
radio communications with the craft at all times while in ports and
at sea;
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.2 means for obtaining a reliable weather forecast
for the corresponding region and its due transmission to all craft
in operation;
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.3 for a category A craft, access to facilities
provided with appropriate rescue and survival equipment; and
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.4 access to craft maintenance services with appropriate
equipment.
1.4.6 "Base port State" means the State in which
the base port is located.
1.4.7 "Breadth (B)" means breadth of the broadest
part of the moulded watertight envelope of the rigid hull, excluding
appendages, at or below the design waterline in the displacement mode
with no lift or propulsion machinery active.
1.4.8 "Cargo craft" is any high speed craft other
than passenger craft, and which is capable of maintaining the main
functions and safety systems of unaffected spaces, after damage in
any one compartment on board.
1.4.9 "Cargo spaces" are all spaces other than
special category spaces used for cargo and trunks to such spaces.
1.4.10 "Category A craft" is any high speed passenger
craft:
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.1 operating on a route where it has been demonstrated
to the satisfaction of the flag and port States that there is a high
probability that in the event of an evacuation at any point of the
route, all passengers and crew can be rescued safely within the least
of:
- the time to prevent persons in survival craft from exposure causing
hypothermia in the worst intended conditions,
- the time appropriate with respect to environmental conditions
and geographical features of the route, or
- 4 h; and
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.2 carrying not more than 450 passengers.
1.4.11 "Category B craft" is any high speed passenger
craft, other than a category A craft, with machinery and safety systems
arranged such that, in the event of damage disabling any essential
machinery and safety systems in one compartment, the craft retains
the capability to navigate safely.
1.4.12 "Continuously manned control station" is
a control station which is continuously manned by a responsible member
of the crew while the craft is in normal service.
1.4.13 "Control stations" are those spaces in
which the craft's radio or navigating equipment or the emergency source
of power and emergency switchboard are located, or where the fire
recording or fire control equipment is centralized, or where other
functions essential to the safe operation of the craft such as propulsion
control, public address, stabilization systems, etc., are located.
1.4.15 "Crew accommodation" are those spaces allocated
for the use of the crew, and include cabins, sick bays, offices, lavatories,
lounges and similar spaces.
1.4.16 "Critical design conditions" means the
limiting specified conditions chosen for design purposes, which the
craft should keep in displacement mode. Such conditions should be
more severe than the worst intended conditions by a suitable margin
to provide for adequate safety in survival condition.
1.4.17 "Design waterline" means the waterline
corresponding to the maximum operational weight of the craft with
no lift or propulsion machinery active and is limited by the requirements
of chapters 2 and 3.
1.4.18 "Displacement mode" means the regime, whether
at rest or in motion, where the weight of the craft is fully or predominantly
supported by hydrostatic forces.
1.4.19 "Failure mode and effect analysis (FMEA)"
is an examination, in accordance with annex 4,
of the craft's systems and equipment to determine whether any reasonably
probable failure or improper operation can result in a hazardous or
catastrophic effect.
1.4.20 "Flap" means an element formed as integrated
part of, or an extension of, a foil, used to adjust the hydro- or
aerodynamic lift of the foil.
1.4.21 "Flashpoint" means a flashpoint determined
by a test using the closed cup apparatus referenced in the International
Maritime Dangerous Goods (IMDG) Code.
1.4.22 "Foil" means a profiled plate or three
dimensional construction at which hydrodynamic lift is generated when
the craft is under way.
1.4.23 "Fully submerged foil" means a foil having
no lift components piercing the surface of the water in the foil-borne
mode.
1.4.24 "High speed craft" is a craft capable
of a maximum speed in metres per second (m/s) equal to or exceeding:
where:
|
V |
= |
displacement corresponding
to the design waterline |
1.4.25 "Hydrofoil boat" is a craft which is supported
above the water surface in non-displacement mode by hydrodynamic forces
generated on foils.
1.4.26 "Length (L)" means the overall length of
the underwater watertight envelope of the rigid hull, excluding appendages,
at or below the design waterline in the displacement mode with no
lift or propulsion machinery active.
1.4.27 "Lightweight" is the displacement of the
craft in tonnes without cargo, fuel, lubricating oil, ballast water,
fresh water and feedwater in tanks, consumable stores, passengers
and crew and their effects.
1.4.28 "Machinery spaces" are spaces containing
internal combustion engines with aggregate total power output of more
than 110 kW, generators, oil fuel units, propulsion machinery, major
electrical machinery and similar spaces and trunks to such spaces.
1.4.29 "Maximum operational weight" means the
overall weight up to which operation in the intended mode is permitted
by the Administration.
1.4.30 "Maximum speed" is the speed achieved at
the maximum continuous propulsion power for which the craft is certified
at maximum operational weight and in smooth water.
1.4.31 "Muster station" is an area where passengers
can be gathered in the event of an emergency, given instructions and
prepared to abandon the craft, if necessary. The passenger spaces
may serve as muster stations if all passengers can be instructed there
and prepared to abandon the craft.
1.4.32 "Non-displacement mode" means the normal
operational regime of a craft when non-hydrostatic forces substantially
or predominantly support the weight of the craft.
1.4.33 "Oil fuel unit" is the equipment used for
the preparation of oil fuel for delivery to an oil-fired boiler, or
equipment used for the preparation for delivery of heated oil to an
internal combustion engine, and includes any oil pressure pumps, filters
and heaters dealing with oil at a pressure of more than 0.18 N/mm2.
1.4.34 "Open vehicle spaces" are spaces:
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.1 to which any passengers carried have access;
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.2 intended for carriage of motor vehicles with
fuel in their tanks for their own propulsion; and
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.3 either open at both ends, or open at one end
and provided with adequate natural ventilation effective over their
entire length through permanent openings in the side plating or deckhead
or from above.
1.4.35 "Operating compartment" means the enclosed
area from which the navigation and control of the craft is exercized.
1.4.36 "Operating station" means a confined area
of the operating compartment equipped with necessary means for navigation,
manoeuvring and communication, and from where the functions of navigating,
manoeuvring, communication, commanding, conning and lookout are carried
out.
1.4.37 "Operational speed" is 90% of the maximum
speed.
1.4.38 "Organization" means the International
Maritime Organization.
1.4.39 "Passenger" is every person other than:
1.4.40 "Passenger craft" is a craft which carries
more than twelve passengers.
1.4.41 "Place of refuge" is any naturally or artificially
sheltered area which may be used as a shelter by a craft under conditions
likely to endanger its safety.
1.4.42 "Public spaces" are those spaces allocated
for the passengers and include bars, kiosks, smoke rooms, main seating
areas, lounges, dining rooms, recreation rooms, lobbies, lavatories
and similar permanently enclosed spaces allocated for passengers.
1.4.43 "Service spaces" are those enclosed spaces
used for pantries containing food warming equipment but no cooking
facilities with exposed heating surfaces, lockers, sales shops, store-rooms
and enclosed baggage rooms.
1.4.44 "Significant wave height" is the average
height of the one third highest observed wave heights over a given
period.
1.4.45 "Special category spaces" are those enclosed
spaces intended for the carriage of motor vehicles with fuel in their
tanks for their own propulsion, into and from which such vehicles
can be driven and to which passengers have access, including spaces
intended for the carriage of cargo vehicles.
1.4.46 "Surface effect ship" (SES) is an air-cushion
vehicle whose cushion is totally or partially retained by permanently
immersed hard structures.
1.4.47 "Transitional mode" means the regime between
displacement and non-displacement modes.
1.4.48 "Worst intended conditions" means the specified
environmental conditions within which the intentional operation of
the craft is provided for in the certification of the craft. This
should take into account parameters such as the worst conditions of
wind force allowable, significant wave height (including unfavourable
combinations of length and direction of waves), minimum air temperature,
visibility and depth of water for safe operation and such other parameters
as the Administration may require in considering the type of craft
in the area of operation.