There is no such thing as stand-on or give-way in conditions of bad visibility, as this reminder explains.
|Rule 19 of the International
Regulations for Preventing Collisions at Sea is often
dangerously misunderstood. Simpy put, there’s no
‘stand on’ vessel in fog.
|If we see a target on a collision course
in sector A, we turn to starboard (unless we are overtaking
it) and if in sector B we turn to port. In the grey areas
we need to be very careful. Make large alterations in
course and/or speed and don’t assume the other vessel
has seen you – or understands Rule 19.
|For a fuller explanation,
see John Williams’ article in PBO 396, p102-104.