"Eisboch" wrote in message
. ..

Screwed that up. Here's Rule 7:

a) Every vessel shall use all available means appropriate to the
prevailing circumstances and conditions to determine if risk of collision
exists. If there is any doubt such risk shall be deemed to exist.
(b) Proper use shall be made of radar equipment if fitted and
operational, including long-range scanning to obtain early warning of risk
of collision and radar plotting or equivalent systematic observation of
detected objects.

(c) Assumptions shall not be made on the basis of scanty information,
especially scanty radar information.

(d) In determining if risk of collision exists the following
considerations shall be among those taken into account:

1.. Such risk shall be deemed to exist if the compass bearing of an
approaching vessel does not appreciably change;
2.. Such risk may sometimes exist even when an appreciable bearing
change is evident, particularly when approaching a very large vessel or a
tow or when approaching a vessel at close range.