General Rules
Vessel Not Under Command
This ship classification is a vessel that through some exceptional circumstances (propulsion or steering casualties) cannot maneuver to comply with the rules
APPLICATION! APPLIES TO ANY VESSEL NAVIGATING IN ANY CONDITION OF VISIBILITY
RED OVER GREEN
SAILING MACHINE
SAIL BOAT
ONE SHORT BLAST
ALTERING COURSE TO STARBOARD
ONE SHORT BLAST
I INTEND TO LEAVE YOU ON MY PORT SIDE/OVERTAKE YOU ON STARBOARD SIDE
Constrained by Draft
This is a power driven vessel which, because of her draft in relation to the available depth, is severely restricted in her ability to change course
RULE 5
LOOKOUT! ALL VESSELS MUST MAINTAIN A LOOKOUT
RED OVER RED
THE CAPT IS DEAD
VESSEL NOT UNDER COMMAND
TWO SHORT BLAST
ALTERING COURSE TO PORT
TWO SHORT BLAST
I INTEND TO LEAVE YOU ON MY STARBOARD SIDE/ OVERTAKE YOU ON PORT SIDE
Restricted in Ability to Maneuver
This is a vessel which, due to the nature of her work, cannot keep out of the way of other vessels.
RULE 6
DONT SPEED! PROCEED AT A SAFE SPEED IN THE SITUATION YOURE IN
GREEN OVER GREEN OVER GREEN
THREE GREENS IN A CROSS MINE CLEARING BOSS
MINESWEEPER
THREE SHORT BLAST
I AM OPERATING ASTERN PROPULSION
THREE SHORT BLAST
I AM OPERATING ASTERN PROPULSION
COLREGS line of demarcation
This line determines whether inland or international rules apply.
RULE 8
AVOID COLLISION! TAKE THE ACTIONS NEEDED TO AVOID COLLISION.
BALL, DIAMOND, BALL
RED WHITE RED
RESTIRCTED ABILITY AHEAD
FIVE SHORT BLAST
DANGER
FIVE SHORT BLAST
"General Prudential Rule" (Rule 2)
This rule says that a mariner is not only responsible for complying with ROR, but also using common sense and good seamanship to avoid nav hazards and collisions
RULE 9
NARROW CHANNEL! MAINTAIN COURSE ON THE STARBOARD SIDE OF THE CHANNEL
CYLINDER
THREE REDS IN A ROW NO ROOM BELOW
(CONSTRAINED BY DRAFT)
ONE PROLONG BLAST
UNDERWAY FROM SLIP OR DOCK, APPROACHING A BLIND BEND
ONE PROLONG BLAST
UNDERWAY FROM SLIP OR DOCK, APPROACHING A BLIND BEND