Buoyage regions
The boundaries of the two buoyage regions A and B in which the colours of the lateral marks and their lights are reversed, are shown in the following diagram:
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International Association of Lighthouse Authorities (IALA) Buoyage System – Introduction
Up till approximately 128 years ago there was no uniform system of buoyage among maritime nations. This was an unacceptable situation and in 1889 a number of countries got together and decided to do something about it. They agreed to mark the port side of channels with black can buoys…
Distress signals
RULE 37: Distress Signals When a vessel is in distress and requires assistance she shall use or exhibit the signals described in Annexure IV to these regulations. Annexure IV – Distress signals Need of Assistance: The following signals, used or exhibited either together or separately, indicate distress and need of…
Part D: Sound and light signals
Rule 32: Definitions The word “whistle” means any sound signalling appliance capable of producing the prescribed blasts and which complies with the specifications in annex III to these regulations. Note: the annex is not included in these notes. The grade 11 and 12 learners are not required to know these…
Part C: Lights and shapes
RULE 20: Application Rules in this part shall be complied with in all weathers. The rules concerning lights shall be complied with from sunset to sunrise, and during such times no other lights shall be exhibited, except such lights as cannot be mistaken for the lights specified in these rules…
Section III: Conduct of a vessel in restricted visibility
RULE 19: Conduct of Vessels in Restricted Visibility This rule applies to vessels not in sight of one another when navigating in or near an area of restricted visibility. Every vessel shall proceed at a safe speed adapted to the prevailing circumstances and condition of restricted visibility. A power driven…