Every vessel shall at all times maintain a proper look-out by sight and hearing as well as by all available means appropriate in the prevailing circumstances and conditions so as to make a full appraisal of the situation and of the risk of collision.
Part B · Section I
Rule 5 — Look-out
Keep a proper look-out at all times by sight, hearing and every other available means.
Part B · Section I — Conduct of vessels in any condition of visibility. Look-out, safe speed, risk of collision, narrow channels and traffic separation schemes.
look-outwatchkeeping
Reference only. Always navigate using the current official publication of the regulations and any local rules that apply.