6.


a) What is the purpose of a preferred channel mark? b) How is a preferred channel mark identified in the daytime: i) in an IALA ‘A’ region? ii) in an IALA ‘B’ region?


c) What is the light sequence of a preferred channel mark: i) in an IALA ‘A’ region? ii) in an IALA ‘B’ region?


7. What are the light characteristics and nominal ranges for the following lights?


a) Point Victoria LH b) Cape Balshaw LH c) Cape Donne LH d) Saint Stephen’s Point LH


8. What are the meanings of the following terms?


a) Geographical range b) Luminous range c) Nominal range


9) A list of lights is an essential source of information.


a) Name six key pieces of information contained in the Admiralty List of Lights b) In what form is the Admiralty List of Lights available? c) How is the Admiralty List of Lights kept up to date? d) Where else can a list of lights be found?


10. 11. Give the rising/dipping distance for the light on Point Victoria at MHWS for a height of eye of 2.0m.


i) Describe the function of a RACON. ii) How can a RACON be identified?


12. Describe the following light characteristics: i) Q ii) VQ iii) Fl iv) LFl v) Iso vi) Oc


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