COLREGS

Question 1

Rule 6. Factors to consider for safe speed?

Answer 1

VD Makes Little Willies Drip

• Visibility
• Traffic density
• Manoeuvrability of your vessel. Turning ability and stopping speed
• Lights from shore and back scatter from your own lights
• Weather: sea, wind, current
• Draught of your vessel

Chinese Charlie Eats Pussy No More

• Characteristics efficiency and limitations of radar equipment
• Constraints of radar range scale in use
• Effect of weather and other sources of interference on radar detection of vessels.
• Possibility that small vessels, ice or floating objects may not be detected at adequate range
• Number, location and movement of vessels detected by radar
• More exact assessment of visibility that may be possible when radar is used to determine range of vessels in the vicinity

Question 2

Sound signals for vessels in restricted vis (PDV making way, PDV underway but stopped, Vessel at anchor, pilot vessel engaged in pilot duty and vessel towing and vessel being towed if manned)

Answer 2

1. PDV making way – One prolonged blast (intervals no more than 2 minutes)
2. PDV underway but stopped – Two prolonged blasts (intervals no more than 2 minutes)
3. Pilot vessel engaged in pilot duty – 4 short blasts accompanied by that used for a power driven vessel (intervals no more than 2 minutes)
4. Vessel towing – One long and two short (intervals no more than 2 minutes)

Question 3

Fill in the gaps of rule 19

Answer 3

(d) A vessel which detects by radar alone the presence of another vessel shall determine if a close quarters situation is developing and/or risk of collision exists. If so, she shall take avoiding action in ample time, provided that when such action consists of an alteration of course, so far as possible the following shall be avoided:
(i) an alteration of course to port for a vessel forward of the beam, other than for a vessel being overtaken;
(ii) an alteration of course towards a vessel abeam or abaft the beam.

Question 4

Complete the following extract taken from Rule 19 part (d) of the
International Regulations for the Prevention of Collisions at Sea:
…….Risk of collision exists. If so she shall take avoiding action in ample
time, provided that when such action consists of an alteration of course, so
far as possible the following shall be avoided:
i) an alteration of course …………………for a vessel………………..………,
other than for a ……………………………………………..; (4)
ii) an alteration of course ……………………………………
(2)

Answer 4

c) An alteration of course to port for a vessel forward of the beam, other than
for a vessel being overtaken (4 marks)
an alteration of course towards a vessel abeam or abaft the beam.

(2 marks)
Note due to importance of this rule answer should be complete, do not allow
partial marks for partial answers

Question 5

The OOW of a power driven vessel sights a tug and tow crossing on her
port bow and determines that a risk of collision exists.

i. State the day signals that should be displayed if the length of tow
exceeds 200m and the towing vessel is 40 metres in length.
(2)

Answer 5

A diamond shape on the tow and on the towed vessel (2)

Question 6

. The OOW of a power driven vessel sights a tug and tow crossing on her
port bow and determines that a risk of collision exists.
State the lights that must be shown during the hours of darkness by
both tug and tow. (5)

Answer 6

Tow: - 3 masthead lights in a vertical line ( may show additional mast
head if required) sidelights, stern light and yellow towing light.
Towed vessel = side lights and a stern light
(5)

Question 7

The OOW of a power driven vessel sights a tug and tow crossing on her
port bow and determines that a risk of collision exists.
State the give way vessel in this situation. (1)

Answer 7

Tug and Tow

Question 8

The OOW of a power driven vessel sights a tug and tow crossing on her
port bow and determines that a risk of collision exists.
State the sound signals that should be given in conditions of
restricted visibility by the tug and tow if the tow is manned. (2)

Answer 8

Tow; 1 prolonged followed by 2 short at intervals not exceeding 2 mins
Towed 1 prolonged followed by 3 short at intervals not exceeding 2
mins (2)

Question 9

The OOW of a power driven yacht following a traffic separation scheme
observes a vessel on her port side displaying two mast head lights, a
green side light and three all round red lights in a vertical line.
i. Provide a full description of the vessel on the port side. (2)

Answer 9

PDV probably more than 50 m inlength, underway may or maynot be
making way, constrained by its draught showing starboard aspect. (2)

Question 10

. The OOW of a power driven yacht following a traffic separation scheme
observes a vessel on her port side displaying two mast head lights, a
green side light and three all round red lights in a vertical line.
**State the obligations of own ship under the Collision Regulations on
identifying the other vessel. (2) **

Answer 10

Shall if circumstances of the case admit, avoid impeding its safe
passage (rule 18d) (2)

Question 11

The OOW of a power driven yacht following a traffic separation scheme
observes a vessel on her port side displaying two mast head lights, a
green side light and three all round red lights in a vertical line.
**State the action that should be taken if risk of collision is deemed to exist.
(2) ** -

Answer 11

Reduce own ships speed (A/C to port is a wrong answer) (2)

Question 12

The OOW of a power driven yacht following a traffic separation scheme
observes a vessel on her port side displaying two mast head lights, a
green side light and three all round red lights in a vertical line.
**State the day signal of the other vessel (2) **

Answer 12

A cylinder

Question 13

The OOW of a power driven yacht following a traffic separation scheme
observes a vessel on her port side displaying two mast head lights, a
green side light and three all round red lights in a vertical line.
**State the sound signals that would be made by the other vessel in
restricted visibility. (2) **

Answer 13

1 long two short, every 2 mins