COLREG (MIDTERM)

Question 1

means a white light placed over the fore and aft centerline of the
vessel showing an unbroken light over an arc of the horizon

Answer 1

Masthead light’

Question 2

means a white light placed as nearly as practicable at the stern
showing an unbroken light over an arc of the horizon

Answer 2

Sternlight’

Question 3

means a yellow light having the same characteristics as the
‘sternlight’

Answer 3

‘Towing light’

Question 4

’ means a light showing an unbroken light over an arc of the horizon

Answer 4

All round light

Question 5

means a light flashing at regular intervals at a frequency of _
flashes or more per minute

Answer 5

Flashing light’, 120

Question 6

In inconspicuous, partly submerged vessels or objects being towed; (LIGHT)

Answer 6

a white all-
round light, 3 miles.

Question 7

An air-cushion vessel when operating in the non-displacement mode shall, in
addition to the lights prescribed in paragraph (a) of this Rule exhibit an

Answer 7

all-round
flashing yellow light

Question 8

A WIG craft only when taking off, landing and in flight near the surface shall, in
addition to the lights prescribed in paragraph (a) of this Rule, exhibit a high intensity

Answer 8

all-round flashing red lighT

Question 9

one short blast to mean

Answer 9

‘I am altering my course to starboard

Question 10

two short blasts to mean

Answer 10

‘I am altering my course to port

Question 11

three short blasts to mean

Answer 11

‘I am operating astern propulsion’

Question 12

one flash to mean

Answer 12

‘I am altering my course to starboard

Question 13

two flashes to mean ‘

Answer 13

I am altering my course to port

Question 14

three flashes to mean

Answer 14

‘I am operating astern propulsion

Question 15

the duration of each flash shall be about,

Answer 15

one second

Question 16

the interval between
flashes shall be about

Answer 16

one second,

Question 17

and the interval between successive
signals shall be

Answer 17

not less than ten seconds

Question 18

the light used for this signals shall, if fitted, be an all-round white light, visible
at a minimum range of _and shall comply with the provisions of _

Answer 18

5 miles , Annex
I to these Regulations

Question 19

two prolonged blasts followed by one short blast to mean

Answer 19

‘I intend to
overtake you on your starboard side

Question 20

two prolonged blasts followed by two short blasts to mean

Answer 20

‘I intend to
overtake you on your port side

Question 21

one prolonged, one short, one prolonged and one short blast, in that order

Answer 21

the vessel about to be overtaken

Question 22

When vessels in sight of one another are approaching each other and from any
cause either vessel fails to understand the intentions or actions of the other, or is in
doubt whether sufficient action is being taken by the other to avoid collision, the
vessel in doubt shall immediately indicate such doubt by giving at least

Answer 22

five short and
rapid blasts on the whistle

Question 23

A vessel nearing a bend or an area of a channel or fairway where other vessels
may be obscured by an intervening obstruction shall sound

Answer 23

one prolonged blast

Question 24

If whistles are fitted on a vessel at a distance apart of more than 100 metres, _ only shall be used for giving manoeuvring and warning signals

Answer 24

one
whistle

Question 25

means height above the uppermost continuous deck. This height shall be measured from the position vertically beneath the location of the light.

Answer 25

'height above the hull'

Question 26

when two masthead lights are carried the after one shall be at least

Answer 26

4.5 metres vertically higher than the forward one

Question 27

The vertical separation of mastheadlights of power-driven vessels shall be such that in all normal conditions of trim the after light will be seen over and separate from the forward light at a distance of _ from the stem when viewed from sea level.

Answer 27

1,000 meters

Question 28

The masthead light of a power-driven vessel of 12 metres but less than 20 metres in length shall be placed at a height above the gunwale of not less than

Answer 28

2.5 metres

Question 29

The sidelights, if in a combined lantern and carried on a power-driven vessel of less than 20 metres in length, shall be placed

Answer 29

not less than 1 metre below the masthead light

Question 30

is interpreted as being a distance of not more than 10% of the breadth of the vessel inboard from the side, up to a maximum of 1 metre. Where the application of above requirement is impractical (e.g., small ships with superstructure of reduced width) exemption may be given on the basis of the Flag Authority acceptance.

Answer 30

“near the side”

Question 31

a ball shall have a diameter of

Answer 31

not less than 0.6 metre

Question 32

cone shall have a base diameter of

Answer 32

not less than 0.6 metre and a height equal to its diameter

Question 33

a cylinder shall have a diameter of at least

Answer 33

0.6 metre and a height of twice its diameter

Question 34

a diamond shape shall consist of

Answer 34

two cones as defined in (ii) above having a common base

Question 35

The vertical distance between shapes shall be at least

Answer 35

1.5 metres.

Question 36

The maximum luminous intensity of navigation lights should be limited to avoid

Answer 36

undue glare

Question 37

shall so far as practicable comply with the minimum intensities, as specified in the Table given in Section 8 of this Annex

Answer 37

Non-electric lights

Question 38

is the height of the mainmast light above the fore mast light in metres

Answer 38

y

Question 39

is the height of the foremast light above the water surface in service condition in metres

Answer 39

a

Question 40

is the trim in service condition in degrees

Answer 40

Ψ

Question 41

is the horizontal separation of masthead lights in metres

Answer 41

C

Question 42

The lights mentioned herein shall, if exhibited in pursuance of Rule 26(d), be placed where they can best be seen. They shall be at least 0.9 metre apart but at a lower level than lights prescribed in Rule 26(b)(i) and (c)(i). The lights shall be visible all round the horizon at a distance of at least 1 mile but at a lesser distance than the lights prescribed by these Rules for fishing vessels

Answer 42

ANNEX II ADDITIONAL SIGNALS FOR FISHING VESSELS FISHING IN CLOSE PROXIMITY

Question 43

when shooting their nets :

Answer 43

two white lights in a vertical line

Question 44

when hauling their nets :

Answer 44

one white light over one red light in a vertical line

Question 45

when the net has come fast upon an obstruction :

Answer 45

two red lights in a vertical line

Question 46

a smoke signal giving off

Answer 46

orange-coloured smoke

Question 47

a rocket parachute flare or a hand flare showing a

Answer 47

red light

Question 48

means any sound signalling appliance capable of producing the prescribed blasts and which complies with the specifications in Annex III to these Regulations

Answer 48

'whistle'

Question 49

means a blast of about one second's duration

Answer 49

short blast'

Question 50

means a blast of from four to six seconds's duration

Answer 50

prolonged blast'