COLREGS Flashcards
What is the definition of vessel?
The word ‘vessel’ includes every description of water craft, including non-displacement craft, WIG craft and seaplanes, used or capable of being used as a means of transportation on water.
What is the definition of a power-driven vessel?
The term ‘power-driven vessel’ means any vessel propelled by machinery.
What is the definition of a sailing vessel?
The term ‘sailing vessel’ means any vessel under sail provided that propelling machinery, if fitted, is not being used.
What is the definition of a vessel engaged in fishing?
The term ‘vessel engaged in fishing’ means any vessel fishing with nets, lines, trawls or other fishing apparatus which restrict manoeuvrability, but does not include a vessel fishing with trolling lines or other fishing apparatus which do not restrict manoeuvrability.
What is the definition of a seaplane?
The word ‘seaplane’ includes any aircraft designed to manoeuvre on the water.
What is the definition of a vessel not under command?
The term ‘vessel not under command’ means a vessel which through some exceptional circumstance is unable to manoeuvre as required by these rules and is therefore unable to keep out of the way of another vessel.
What is the definition of a vessel restricted in her ability to manoeuvre?
The term ‘vessel restricted in her ability to manoeuvre’ means a vessel which from the nature of her work is restricted in her ability to manoeuvre as required by these rules and is therefore unable to keep out of the way of another vessel. The term ‘vessel restricted in their ability to manoeuvre’ shall include but not be limited to:
- a vessel engaged in laying, servicing or picking up a navigation mark, submarine cable or pipeline;
- a vessel engaged in dredging, surveying or underwater operations;
- a vessel engaged in the replenishment of transferring persons, provisions or cargo while underway;
- a vessel engaged in the launching or recovery of aircraft;
- a vessel engaged in mine clearance operations;
- a vessel engaged in a towing operation such as severely restricts the towing vessel and her tow in their ability to deviate from their course.
What is the definition of a vessel constrained by her draught?
The term ‘vessel constrained by her draught’ means a power-driven vessel which, because of her draught in relation to the available depth and width of navigable water, is severely restricted in her ability to deviate from the course she is following.
What is meant by a vessel is underway?
The word ‘underway’ means that a vessel is not at anchor, or made fast to the shore or aground.
What is meant by length and breadth of a vessel?
The words ‘length and breadth’ of a vessel mean her overall length and greatest breadth.
When is a vessel in sight of one another?
Vessels shall be deemed to be sight of one another only when one can be observed visually from the other.
What is meant by restricted visibility?
The term ‘restricted visibility’ means any condition in which visibility is restricted by fog, mist, falling snow, heavy rainstorms, sandstorms or any other similar causes.
What is a WIG craft?
The term ‘ Wing-In-Ground (WIG) craft’ means a multimodal craft which, in its main operational mode, flies in close proximity to the surface by utilising surface-effect action.
What is Rule 5?
Rule 5 - lookout
Every vessel shall at all times maintain a proper lookout by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision.
What is Rule 6?
Rule 6 - Safe speed
Every vessel shall at all times proceed at a safe speed so that she can take proper and effective action to avoid collision and be stopped within a distance appropriate to the prevailing circumstances and conditions.
In determining safe speed what factors should be taken into account? (part A)
Part A) By all vessels:
- the state of visibility;
- the traffic density including concentrations of fishing vessels or any other vessel;
- the manoeuvrability of the vessel with special reference to stopping distance and turning ability in the prevailing conditions;
- at night the presence of background light such as from shore lights or from backscatter of her own lights;
- the sate of wind, sea and current, and the proximity of navigational hazards;
- the draught in relation to the available depth of water.
In determining safe speed what factors should be taken into account? (part B)
Part B) Additionally, by vessels with operational radar:
- the characteristics, efficiency and limitations of the radar equipment;
- any constraints imposed by the radar scale in use;
- the effect on radar detection of the sea state, weather and other sources of interference;
- the possibility that small vessels, ice and other floating objects may not be detected by radar at an adequate range;
- the number, location and movement of vessels detected by radar;
- the more exact assessment of the visibility that may be possible when radar is used to determine the range of vessels of other objects in the vicinity.
What is Rule 1?
Application
What is Rule 2?
Responsibilities
What is Rule 3?
General Definitions
What is Rule 4?
Application - conduct of vessels in any visibility
What is Rule 5?
Look out
What is Rule 6?
Safe speed
What is Rule 7?
Risk of collision
