IK 2

Rocks, Wrecks, Obstructions IK

16	/+ , Co + + ....... Co ^5e		Coral reef which is always covered		421.5 010
17		®L, ^W18 ^^Br	Breakers		423.2 025
d			Discoloured water	Discol t Discold	424.6 09

Piane of Reference for Depths —* IH Historie Wreck —> IN Wrecks
20	Mast (1 -2) m	On large-scale charts, wreck which does not cover, height above height datum			422.1 011
21	,<f Mast (12) / s Wk	On large-scale charts, wreck which covers and uncovers, height above Chart Datum	t	óWk t
22	wk	On large-scale charts, submerged wreck, depth known	^lSwk t		422.1 015
23	/.••• ' Wk	On large-scale charts, submerged wreck, depth unknown	(ywk t		422.1
24	7 sC	Wreck showing any part of hull or superstructure at the level of Chart Datum			422.2 011 013a
25	Masts	Wreck of which the mast(s) only are visible at Chart Datum	Mast (1-2) ... Wk ,y'y Funnel /".y Mast (1_2)		422.2 012
26	(46) ^ 25. Wk	Wreck over which the depth has been obtained by sounding but not by wire sweep			422.4 015
27	(46)Wk (25) Wk /	Wreck which has been swept by wire to the depth shown			422.3 015a
28		Wreck, depth unknown, which is considered dangerous to surface navigation	On modern Admiralty charts (post 1968), with the exception of those which ha\/e been produced initially by, or in co-operation with, other nations, this symbol is used when the depth over the wreck is thought to be 28 metres (15 fathoms) orless. For further details, see Notę below IK29.		422.5 014
29	-H+	Wreck, depth unknown, which is not considered dangerous to surface navigation	On modern Admiralty charts (post 1968), with the exception of those which have been produced initially by, or in co-operation with, other nations, this symbol is used when the depth over the wreck is thought to be morę than 28 metres (15 fathoms). For further details, see Notę below.		422.6 016
Notę: On Admiralty charts published before 1968, the depth criteria applied are as follows: before 1960 8fathoms 1960 to 1963 10 fathoms 1963 to 1968 11 fathoms

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