To all vessels navigating in international waters

To all vessels navigating in roadsteads, straits and open seas

To all vessels upon the high seas and in all waters connected therewith

COLREG

What vessels do COLREG rules 1983 apply to?

Any watercraft capable of floating on water without propelling machinery

Any watercraft including non-displacement craft and seaplanes used or capable of being used as a means of transportation on water

Any floating object fitted with propelling machinery

What does the word 'vessel' mean, according to the COLREG rules?

Any aircraft designed to carry out hydrotechnical and/or hydrometeorological work

Any aircraft designed to manoeuvre on the water

Any aircraft being on the water for various reasons

A vessel engaged in replenishment or transferring persons, provisions or carge while underway

A vessel with damages to the steering gear

What vessel may be considered as 'vessel restricted in her ability to manoeuvre'?

A vessel engaged in towing, having the towing line less than 50 M in lenght

A vessel engaged in towing operation such as severely restricts the towing vessel and her tow in their ability to deviate from their course

The term 'vessel restricted in her ability to manoeuvre' will not be limited to the vessels quoted in the rules

It is limited to te vessels quoted in the rules

It is limited to the damaged vessels which are unable to keep out of the way of another vessel

To what vessel is the term 'vessel restricted in her ability to manoeuvre' limited to?

A vessel which because of her draught and the existance of navigation obstructions in unable to deviate from her course

A power-driven vessel which because of her draght in relation to the avilable depth of water is severely restricted in her ability to deviate from her course

What does the term 'vessel constrained by her draught' mean?

Any condition in which visibility is reduced under 1,5 m

The condition in which the visibility is restricted by fog, rain or snow

Any condition in which visibility is restricted by fog, mist, falling snow, heavy rainstorms, sandstorms or any other similar causes

What does the term 'restricted visibility' mean?

The vessel's length, nautical qualities of the vessel, the engine's power and the visibility

The crew's training, the navigation conditions and visibility

The visibility, the traffic density, the manoeuvrability of the vessel at night, the presence of background light, the state of wind and sea, the vessel's draught

Which are the factors taken into accouunt in determinating the 'safe speed'?

In ample time, with a succession of small alterations of course in order not to deviate from the vessel's course

Positively, in ample time and with due regard to the observance of good seamanship

Positively, with speed alterations to avoid risk of collision

How shall an action to avoid collision be taken?

A distance of not less than 6 cables shall be ensured

It shall be such as to result in passing at a safe distance

It shall be such as to ensure that the vessel passes at more than 2 miles distance

What distance between vessels shall the avoiding action ensure?

Untill the vessels shall be abeam one to each other

Untill the other vessel will be at an angle of more than 45 degrees by starboard / portside

Untill the other vessel is finally past and clear

Till when shall the effectiveness of an avoiding action be checked?

Slackening her speed or taking all way off by stopping or reversing her means of propulsion

Which is the best manoeuvre to allow more time to asset the situation, when a collision must be avoided?

They shall conduct as any other vessel and shall comply with the COLREG rules

They shall navigate in any direction for fishing purposes

They shall not impede the passage of any vessel following a traffic lane

How shall vessels engaged in fishing conduct in a traffic separation scheme?

The vessel overtaking any other will have priority

The overtaken vessel shall manoeuvre such as to allow the overtaking vessel to overtake

Any vessel overtaking any other shall keep out of the way of the vessel being overtaken

How shall a vessel overtaking any other conduct?

When coming up with another vessel from a direction more than 22.5 degrees aft her beam so that at night she would be able to see only the sternlight of that vessel

When she will be able to see the sternlight and the sidelights of the overtaken vessel

When she will be able to see the stern-masthead light and the sidelights

When shall a vessel be deemed to be overtaking any other?

She shall consider herself a privileged vessel and shall maintain her course and speed

She shall assume that this is the case and act accordingly

She shall give the regular signals and after being enlightened, act according to the circumstances

How shall a vessel manoeuvre in doubt as to whether she is overtaking another?

The vessel which sees the other on port side shall keep out of the way of the other

The vessel which sees the other on starboard side shall reduce speed or even stop to let the other pass by

The vessel which has the other on her own starboard side shall keep out of the way and, if the circumstances of the case admit, avoid crossing ahead of the other vessel

What manoeuvre shall be made when 2 power-driven vessels are crossing so as to involve risk of collision?

When the vessels are navigating through the straits

When entering or leaving a traffic separation scheme

When, from any cause, the vessel finds herself so close that collision cannot be avoided by the action of the give-way vessel alone, she shall take such action as will best aid to avoid collision

When shall a stand-on vessel take action to avoid collision by her manoeuvre alone?

Vessels restricted in their ability to manoeuvre

Which vessel's way shall a sailing vessel underway keep out of?

Which vessel's way shall, so far as possible a vessel engaged in fishing, when underway, keep out of?

Power-driven vessels underway, with low speed

Which vessel's way shall a vessel constrained by her draught keep out of?

Oil-tankers and tankers carrying liquefied gases

At a safe speed and her engines ready for immediate manoeuvre

At slow speed but the telegraph on 'stand-by' in order to be able to manoeuvre in ample time

At economic speed, but with a proper look-out

How shall a power-driven vessel navigate in conditions of restricted visibility?

When shall the rules concerning 'lights and shapes' complied with?

A white light placed at the stern of a vessel

A white light placed as nearly as practicable at the stern showing an unbroken light over an arc of the horizon of 135 degrees and soixed as to show the liht 67.5 degrees right aft on from each side of the vessel

A white light placed at the stern showing an unbroken light over an arc of the horizon 360 degrees

A light flashing at regular intervals at a frequency of 60 flashes per minute

A light flashing at regular intervals at a frequency of 120 flashes or more per minute

A light flashing quick flashes at regular intervals

What does the term 'flashing light' mean?

What ranges shall the mastlights be visible at for vessels of 50m or more in length?

What range shall the mastlights be visible at, for vessels between 20 and 50m in length?

What range shall the sidelights be visible at for vessels less than 12 metres in length?

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