CHART FAMILIARISATION Use Charts 3 and 4


1. Depths on these charts are shown in metres, with contour lines and colours used to give clarity. What is the significance of: a) The green areas on Chart 3? b) The dark blue areas on Chart 3? c) The pale blue areas on Chart 3? d) Do the coloured areas have exactly the same meaning on Chart 4?


2. Mark in these directions on the diagram below: 000° , 270° , 090° , 135° , 045° , 225° , 180° and 315° N


3. One degree (1°) of latitude equals 60 sea miles, so one minute (1’) of latitude equals 1 sea mile. a) True or false? b) Where is the latitude scale found on a paper chart? Is it: (i) at the top and the bottom? (ii) at the sides?


4. What are the meanings of the following chart symbols? (a)


(b) (c) (d) (e) (f)


5. a) Which publication lists all the symbols used on UK Admiralty paper charts? b) Are the symbols shown on an electronic chart the same as those shown on the paper ones?


6. What features are in the following positions? Use Chart 3. a) 45°43’.00N 006°12’.10W b) 46°11’.20N


005°43’.20W c) 45°40’.80N 005°48’.40W


7. a) Use Chart 3 to find the direction and distance from Holm Point light, Fl(4) 15s 28m 12M, (46°18’.80N 005°49’.65W) to the following positions:


i) The east cardinal buoy off Pow Head: 46°16’.90N 005°48’.65W ii) The Outer Fraser safe water mark: 46°20’.08N


005°59’.30W


iii) The south cardinal buoy south of Strong Holm Island: 46°15’.45N 005°52’.10W iv) The yellow buoy Yacht T: 46°21’.62N


005°39’.30W


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