Colregs Scenarios

Question 1

General Technique

Answer 1

ID & Info
Rule
Responsibility
Action

Question 2

PDV v CBD

Answer 2

Rule 18 - PDV to avoid impeding

Question 3

CBD on port side crossing

Answer 3

Rule 15: they should give way
but
18d: I am to avoid impeding
so
Action: sound 1 short and alter to stbd to parallel, then consider slowing down to expedite resolution of situation

Question 4

Vessel approaching from 22.5° abaft beam

Answer 4

THIS IS NOT OVERTAKING
RULE 18 THEREFORE WINS
KEEP CLEAR IF NOT PDV

Question 5

RAM crossing Port Side

Answer 5

Rule 15 does NOT apply here.

R18; I am to keep out of her way.
While there is nothing to prevent me from altering to port within the rules, in the interest of good seamanship I would

Sound 1 short blast + supplement with signal lamp
Bold and substantial alteration to stbd
Pass ahead at a safe distance
Continue to monitor until past and clear

Question 6

RAM crossing Port Side

Answer 6

Rule 15 does NOT apply here.

R18; I am to keep out of her way.
While there is nothing to prevent me from altering to port within the rules, in the interest of good seamanship I would

Sound 1 short blast + supplement with signal lamp
Bold and substantial alteration to stbd
Pass ahead at a safe distance
Continue to monitor until past and clear