Navigation Light Controller (NLC)

Navigation Light Controller (NLC)

Definition(s)

Navigation Light Controller (NLC)

Navigation Light Controller (NLC) means a device enabling operational control of a Navigation Light. Source: IMO Resolution MSC.253(83), Recommendation on Performance Standards for Navigation Lights, Navigation Light Controllers and associated equipment, 8 October 2007, International Maritime Organization. Regulatory Guidance
Navigation Light (NL)

Navigation Light (NL)

Definition(s)

Navigation Light (NL)

Navigation Light (NL) means the following lights: .1 masthead light, sidelights, sternlight, towing light, all-round light, flashing light as defined in Rule 21 of COLREGs; .2 all-round flashing yellow light required for air-cushion vessels by Rule 23 of COLREGs; and .3 manoeuvring light required by Rule 34(b) of COLREGs. The light source includes lamps, its housing, placing and means for delimiting the angle of lighting. Source: IMO Resolution MSC.253(83), Recommendation on Performance Standards for Navigation Lights, Navigation Light Controllers and associated equipment, 8 October 2007, International Maritime Organization. Regulatory Guidance
Lamp

Lamp

Definition(s)

Lamp

Lamp means a source producing light, including incandescent sources, Light Emitting Diodes (LED) and other non-incandescent sources. Source: IMO Resolution MSC.253(83), Recommendation on Performance Standards for Navigation Lights, Navigation Light Controllers and associated equipment, 8 October 2007, International Maritime Organization. Regulatory Guidance
Associated Equipment

Associated Equipment

Definition(s)

Associated Equipment

Associated equipment means equipment necessary for the operation of NLs and NLCs. Source: IMO Resolution MSC.253(83), Recommendation on Performance Standards for Navigation Lights, Navigation Light Controllers and associated equipment, 8 October 2007, International Maritime Organization. Regulatory Guidance
Safety Centre

Safety Centre

Definition(s)

Safety Centre

Safety centre is a control station dedicated to the management of emergency situations. Safety systems’ operation, control and/or monitoring are an integral part of the safety centre. <Chapter II-1, regulation 3>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Safe Area, in the Context of a Casualty

Safe Area, in the Context of a Casualty

Definition(s)

Safe Area, in the Context of a Casualty

Safe area in the context of a casualty is, from the perspective of habitability, any area(s) which is not flooded or which is outside the main vertical zone(s) in which a fire has occurred such that it can safely accommodate all persons onboard to protect them from hazards to life or health and provide them with basic services. <Chapter II-1, regulation 3>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Power Actuating System

Power Actuating System

Definition(s)

Power Actuating System (steering gear)

Power actuating system is the hydraulic equipment provided for supplying power to turn the rudder stock, comprising a steering gear power unit or units, together with the associated pipes and fittings, and a rudder actuator. The power actuating systems may share common mechanical components (i.e. tiller, quadrant and rudder stock) or components serving the same purpose. <Chapter II-1, regulation 3>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 5, Main and Auxiliary Machinery, June 2013, Lloyd’s Register, Global Standards
Main Generating Station

Main Generating Station

Definition(s)

Main Generating Station

Main generating station is the space in which the main source of electrical power is situated. <Chapter II-1, regulation 3>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Emergency Condition

Emergency Condition

Definition(s)

Emergency Condition

Emergency condition is a condition under which any services needed for normal operational and habitable conditions are not in working order due to failure of the main source of electrical power. <Chapter II-1, regulation 3>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Steering Gear Control System

Steering Gear Control System

Definition(s)

Steering Gear Control System

Steering gear control system is the equipment by which orders are transmitted from the navigating bridge to the steering gear power units. Steering gear control systems comprise transmitters, receivers, hydraulic control pumps and their associated motors, motor controllers, piping and cables. <Chapter II-1, regulation 3>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation Source: Rules and Regulations for the Classification of Mobile Offshore Units, Part 5, Main and Auxiliary Machinery, June 2013, Lloyd’s Register, Global Standards
Keel Line

Keel Line

Definition(s)

Keel Line

Keel line is a line parallel to the slope of the keel passing amidships through: .1 the top of the keel at centreline or line of intersection of the inside of shell plating with the keel if a bar keel extends below that line, on a ship with a metal shell; or .2 in wood and composite ships, the distance is measured from the lower edge of the keel rabbet. When the form at the lower part of the midship section is of a hollow character, or where thick garboards are fitted, the distance is measured from the point where the line of the flat of the bottom continued inward intersects the centreline amidships. . <Chapter II-1, regulation 2>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Trim

Trim

Definition(s)

Trim

Trim is the difference between the draught forward and the draught aft, where the draughts are measured at the forward and aft terminals respectively, disregarding any rake of keel. <Chapter II-1, regulation 2>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Partial Subdivision Draught (dp)

Partial Subdivision Draught (dp)

Definition(s)

Partial Subdivision Draught (dp)

Partial subdivision draught (dp) is the light service draught plus 60% of the difference between the light service draught and the deepest subdivision draught. <Chapter II-1, regulation 2>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Light Service Draught (dl)

Light Service Draught (dl)

Definition(s)

Light Service Draught (dl)

Light service draught (dl) is the service draught corresponding to the lightest anticipated loading and associated tankage, including, however, such ballast as may be necessary for stability and/or immersion. Passenger ships should include the full complement of passengers and crew on board. <Chapter II-1, regulation 2>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Deepest Subdivision Draught (ds)

Deepest Subdivision Draught (ds)

Definition(s)

Deepest Subdivision Draught (ds)

Deepest subdivision draught (ds) is the waterline which corresponds to the summer load line draught of the ship. <Chapter II-1, regulation 2>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Forward Perpendicular

Forward Perpendicular

Definition(s)

Forward Perpendicular

Forward perpendicular is the forward perpendicular as defined in the International Convention on Load Lines in force. <Chapter II-1, regulation 2>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Forward Terminal

Forward Terminal

Definition(s)

Forward Terminal

Forward terminal is the forward limit of the subdivision length. <Chapter II-1, regulation 2>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Aft Terminal

Aft Terminal

Definition(s)

Aft Terminal

Aft terminal is the aft limit of the subdivision length. <Chapter II-1, regulation 2>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Mid-Length

Mid-Length

Definition(s)

Mid-Length

Mid-length is the mid-point of the subdivision length of the ship. <Chapter II-1, regulation 2>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Subdivision Length (Ls)

Subdivision Length (Ls)

Definition(s)

Subdivision Length (Ls)

Subdivision length (Ls) of the ship is the greatest projected moulded length of that part of the ship at or below deck or decks limiting the vertical extent of flooding with the ship at the deepest subdivision draught.  <Chapter II-1, regulation 2>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Cabin Balcony

Cabin Balcony

Definition(s)

Cabin Balcony

Cabin balcony is an open deck space which is provided for the exclusive use of the occupants of a single cabin and has direct access from such a cabin.<Chapter II-2, regulation 53>. Source: IMO Resolution MSC.216(82), amendments to the International Convention for the Safety of Life at Sea, 1974, as amended, 8 December 2006, International Maritime Organization. Legislation
Ship Security Officer

Ship Security Officer

Definition(s)

Ship Security Officer

Ship security officer means the person on board the ship, accountable to the master, designated by the Company as responsible for the security of the ship including implementation and maintenance of the ship security plan and liaison with the Company security officer and port facility security officers <Chapter I, regulation I/1>. Source: IMO Resolution A.1079(28), Recommendations for the Training and Certification of Personnel on Mobile Offshore Units (MOUs), Adopted on 4 December 2013, International Maritime Organization, Regulatory Guidance Source: IMO Resolution MSC.203(81), amendments to the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW), 1978, 18 May 2006, International Maritime Organization. Legislation
ISPS Code

ISPS Code

Definition(s)

ISPS Code

ISPS Code means the International Ship and Port Facility Security (ISPS) Code adopted on 12 December 2002, by resolution 2 of the Conference of Contracting Governments to the International Convention for the Safety of Life at Sea (SOLAS), 1974, as may be amended by the Organization <Chapter I, regulation I/1>. Source: IMO Resolution MSC.203(81), amendments to the International Convention on Standards of Training, Certification and Watchkeeping for Seafarers (STCW), 1978, 18 May 2006, International Maritime Organization. Legislation Source: IMO Resolution A.1079(28), Recommendations for the Training and Certification of Personnel on Mobile Offshore Units (MOUs), Adopted on 4 December 2013, International Maritime Organization, Regulatory Guidance
Dedicated Reserve Power Source

Dedicated Reserve Power Source

Definition(s)

Dedicated Reserve Power Source

Dedicated reserve power source means a secondary battery, with suitable automatic charging arrangements, dedicated solely to the S-VDR, of sufficient capacity to operate it as required by 5.3.2. Source: IMO Resolution MSC.163(78), Recommendation on Performance Standards for Shipborne Simplified Voyage Data Recorders (S-VDRs), 17 May 2004, International Maritime Organization. Regulatory Guidance
Playback Equipment

Playback Equipment

Definition(s)

Playback Equipment

Playback equipment means the equipment, compatible with the recording medium and the format used during recording, employed for recovering the data. It includes also the display or presentation hardware and software that is appropriate to the original data source equipment. <S-VDRs>. Source: IMO Resolution MSC.163(78), Recommendation on Performance Standards for Shipborne Simplified Voyage Data Recorders (S-VDRs), 17 May 2004, International Maritime Organization. Regulatory Guidance
Final Recording Medium

Final Recording Medium

Definition(s)

Final Recording Medium

Final recording medium means the item of hardware on which the data is recorded such that access to it would enable the data to be recovered and played back by use of suitable equipment. <S-VDRs>. Source: IMO Resolution MSC.163(78), Recommendation on Performance Standards for Shipborne Simplified Voyage Data Recorders (S-VDRs), 17 May 2004, International Maritime Organization. Regulatory Guidance
Simplified Voyage Data Recorder (S-VDR)

Simplified Voyage Data Recorder (S-VDR)

Definition(s)

Simplified Voyage Data Recorder (S-VDR)

Simplified Voyage data recorder (S-VDR) means a complete system, including any items required to interface with the sources of input data, for processing and encoding the data, the final recording medium, the power supply and dedicated reserve power source. Source: IMO Resolution MSC.163(78), Recommendation on Performance Standards for Shipborne Simplified Voyage Data Recorders (S-VDRs), 17 May 2004, International Maritime Organization. Regulatory Guidance
Cross Deck

Cross Deck

Definition(s)

Cross Deck

Cross deck means the transverse area of the main deck which is located inboard and between hatch coamings. Source: IMO Resolution MSC.158(78), amendments to the Technical provisions for means of access for inspections (Resolution MSC.133(76)), 20 May 2004, International Maritime Organization. Regulatory Guidance
Distance Below Deck Head

Distance Below Deck Head

Definition(s)

Distance Below Deck Head

Distance below deck head means the distance below the plating. Source: IMO Resolution MSC.158(78), amendments to the Technical provisions for means of access for inspections (Resolution MSC.133(76)), 20 May 2004, International Maritime Organization. Regulatory Guidance
Utility

Utility

Definition(s)

Utility

“Utility” means a navigable water, a highway, an irrigation ditch, a publicly owned or operated drainage system, sewer or dike, an underground telegraph or telephone line or a line for the transmission of hydrocarbons, electricity or any other substance; installation de service public. Source: National Energy Board Act, R.S.C., 1985, c. N-7, Canada, current to April 29, 2013. Legislation