D-Watch 121
INTERNATIONAL
REGULATIONS FOR
PREVENTING
COLLISION AT SEA,
1972
OBJECTIVES:
At the end of the session, students will be able to:
• State the outline of the International Regulations for
Preventing Collisions at Sea, 1972
• Explain the different paragraphs of COLREGS 1972
Rule 1
• Identify those who are responsible for any
consequence from any neglect/accident happened
onboard
• Explain the different terms defined in Rule 3
• Give examples of a vessel RAM
COLREGS 1972 Additional Topics:
contains: • Routeing System
• 6 Parts - TSS
- Part A - Roundabout
- Part B - One-way route and track
* Section 1 - Two-way route and track
* Section 2 - etc
* Section 3 • IALA Maritime Buoyage
- Part C System
- Part D - Lateral
- Part E - Cardinal
- Part F - Special marks
• 41 Rules - Isolated Danger
• 4 Annexes - Safe Water
Rule 1-
A – who shall apply
- where to apply
- limitation in terms of area
B - limitations of COLREGS
(special rules made by appropriate authorities)
C - limitations of COLREGS
(special rules made by government of the state)
D - possibility of adopting TSS
E - special rules set by gov‟t. of the state
Rule 1: APPLICATION
a) These rules shall apply to all vessels upon the
* high seas and
* in all waters connected
therewith navigableby
seagoing vessels.
NOTE: EXCEPTION
* areas within the Demarcation lines
= dashed magenta COLREGS shown on chart
where Inland Rules apply
= separate areas governed by the COLREGS
from those governed by the Inland Rules
Rule 1: APPLICATION
b) Nothing in these rules shall interfere with the
operation of any special rules made by an
appropriate authority for:
* roadsteads * harbors
* rivers * lakes or
* inland waterways connected with the high
seas and navigable by seagoing vessels.
SUCH SPECIAL RULES:
-- shall conform as closely as possible
to these rules.
Rule 1: APPLICATION
c) Nothing in these rules shall interfere
with the operation of any special rules
made by the government of any state
with respect to:
* additional station
or signal lights, - ships of war
* shapes or - vessels proceeding
* whistle signals under convoy
fishing vessels engaged in fishing
as a fleet.
(stipulated in Annex II of COLREGS 1972)
Rule 1: APPLICATION:
continuation of Paragraph C
These additional station or signal lights, shapes
or whistle signals shall, so far as possible, be
such that they:
-- cannot be mistaken for any
* light or
* shape or authorized elsewhere
* signal under these rules.
Rule 1: APPLICATION
d) Traffic separation schemes (TSS)
-- may be adopted by the organization for the
purpose of these rules.
What should be done if a vessel of
any special construction or
purpose cannot comply with the
provisions of any of these rules
with respect to the specifications
of lights, shapes and sound
signals?
Rule 1: APPLICATION
e) Whenever the government concerned shall have
determined that:
* a vessel of any special construction
or purpose cannot comply with the
provisions of any of these rules
with respect to the:
- lights
* number * position
* range * arc of visibility
- shapes
- sound-signaling appliances
* disposition
* characteristics………
Rule 1: APPLICATION
…such vessel shall comply with such other
provisions in regard to the
* number, position, range or arc of visibility
of lights or shapes,
* disposition and characteristics of sound
signaling appliances,
-- as her government shall have
determined to be the closest possible
compliance with these rules in respect of
that vessel.
Examples of special rules made by
an appropriate authority:
• Navigation and Pilot
rules made by US
• Pilot rules made by
other government of
a particular state
Rule 2: Responsibility
a) Nothing in these rules shall exonerate:
- any vessel - or the owner,
- master - or crew,
from the consequences of:
* any neglect to comply with
these Rules or
* of the neglect of any precaution
which may be required by the
ordinary practice of seamen, or
* by the special circumstances
of the case.
Rule 2: Responsibility
b) In construing and complying with these Rules
due regard shall be had to:
* all dangers of navigation and
* collision and
* any special circumstances, including
the limitations of the vessels involved
- which may make a departure
from these Rules necessary to
avoid immediate danger.
Vocabulary:
• CONSTRUE – analyze or explain the
meaning of
• EXONERATE – to hold blameless or to
excuse
• ORDINARY PRACTICE OF SEAMEN
- the application of the
principles of „good
seamanship‟
• SPECIAL CIRCUMSTANCES
– refers to situations that
are not specifically
covered by the Rules
Rule 3: General Definitions
For the purpose of these rules except where the
context otherwise requires:
a) "VESSEL"
- includes every description of water
craft, used or capable of being used as a
means of transportation on water.
* non-displacement craft
* seaplanes
* WIG craft, etc
Pictures of different vessels:
hydrofoil
Rule 3: General Definitions
b) "POWER DRIVEN
VESSEL"
- any vessel
propelled by
machinery.
Rule 3: General Definitions
c) "SAILING
VESSEL"
- any vessel
under sail
provided that
propelling
machinery , if
fitted is not
being used.
Rule 3: General Definitions
d) "VESSEL ENGAGED IN FISHING"
- any vessel fishing with
nets, lines, trawls or
other fishing apparatus
which restrict
maneuverability, but
does not include a
vessel fishing with
trolling lines or other
fishing with trolling
lines or other fishing
apparatus which do not
restrict maneuverability.
Rule 3: General Definitions
e) "SEAPLANE"
- includes any
aircraft designed
to maneuver on
the water.
Rule 3: General Definitions
f) "VESSEL NOT UNDER COMMAND"
- a vessel which through
some exceptional
circumstance is
* unable to maneuver
as required by these
rules
* and is therefore unable
to keep out of the way
of another vessel.
Rule 3: General Definitions
g) "VESSEL RESTRICTED IN HER ABILITY
TO MANEOUVRE"
- a vessel which from the
nature of her work
* is restricted in her ability
to maneuver as required
by these rules
* and is therefore unable
to keep out of the way
of another vessel.
Vessels RAM
Examples of Vessels RAM:
i) a vessel engaged in laying, servicing or picking
up a navigation mark, submarine cable or
pipeline.
ii) a vessel engaged in dredging surveying or
underwater operations.
iii) a vessel engaged in replenishment or
transferring persons, provisions or cargo
while underway.
Examples of Vessels RAM:
iv) a vessel engaged in the launching or
recovery of aircraft
v) a vessel engaged in mine clearance
operations
vi) 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.
Rule 3: General Definitions
h) "VESSEL CONSTRAINED
BY HER DRAUGHT'
6 mtrs
- a power driven vessel
which, because of her 1 mtr
draught in relation to Seabed
the available depth
and width of navigable
water, is severely restricted in her
ability to deviate from the course she is
following.
Rule 3: General Definitions
i) "UNDERWAY"
- that a vessel
is NOT
* at anchor,
* nor made
fast to the
shore
*nor aground
MAKING WAY
- Vessel has motion through
the water by:
* means of propulsion
* current
* wind
Rule 3: General Definitions
j) "LENGTH"
- her length BREADTH
overall
LENGTH
"BREADTH"
- greatest
breadth/beam
Rule 3: General Definitions
k) Vessels shall be
deemed to be in
sight of one
another only
when:
- one can be
observed
visually from
the other.
Rule 3: General Definitions
l) "RESTRICTED
VISIBILITY"
- any condition in
which visibility is
restricted by:
* fog,
* mist,
* falling snow,
* heavy rainstorms,
* sandstorms or
* any other similar
causes.
Rule 3: General Definitions
m) “Wing-In Ground
(WIG) Craft”
- a multi-modal
craft,
- when in its
operational
mode,
* flies in close
proximity to the
surface by
utilizing surface-
effect action
Let’s see if you are visuals…
Identify the following as defined
by COLREGS 1972 Rule 3
Identify the following as defined
by COLREGS 1972 Rule 3
Identify the following as defined
by COLREGS 1972 Rule 3
Identify the following as defined
by COLREGS 1972 Rule 3
Identify the following as defined
by COLREGS 1972 Rule 3
Identify the following as defined
by COLREGS 1972 Rule 3
Identify the following as defined
by COLREGS 1972 Rule 3
Identify the following as defined
by COLREGS 1972 Rule 3
