Chart symbols Flashcards
Flood tide stream with mean spring rate
Ebb tide stream with mean spring rate
Current in restricted waters
Position approximate
Position doubtful
Dangerous cargo berth
Overfalls, tide rips, races
Eddies
Existence doubtful
Sounding of doubtful depth
Reported, but not confirmed
Reported (with year of report), but not confirmed
No bottom found at depth shown
Drying heights and contours above chart datum
Dredged channel or area with minimum depth maintained
Sand
Mud
Clay
Silt
Stones
Gravel
Pebbles
Cobbles
Rock; Rocky
Boulder(s)
Coral, coralline algae
Shells (skeleton remains)
Two layers, e.g. sand over mud
Weed (including kelp)
Kelp, weed
Seagrass
Fine
Medium
Coarse
Broken
Sticky
Soft
Stiff
Volcanic
Calcareous
Hard
Depth swept by wire drag or confirmed by diver
Safe clearance depth, exact depth unknown
Rock awash at chart datum
Coral reef which is always covered
Wreck, hull never covers, height above chart datum
Wreck, covers and uncovers, height above chart datum
Submerged wreck, depth known
Submerged wreck, depth unknown
Wreck showing any part of hull or superstructure at chart datum
Wreck of which only mast is visible at chart datum
Wreck, least depth known by sounding only
Wreck, depth swept by wire drag or confirmed by diver
Dangerous wreck, depth unknown
Sunken wreck, not dangerous to surface navigation
Wreck over which the exact depth is unknown, safe clearance at depth shown
Foul ground
Obstruction, depth unknown
Obstruction, least depth known by sounding only
Obstruction, depth swept by wire drag or confirmed by diver
Mandatory direction of traffic flow
Recommended direction of traffic flow
Separation line
Separation zone
Precautionary area
Radio reporting points showing directions of vessel movement with designation and VHF channel
Radio reporting line
Prohibited area
Reported anchorage
Seaward limit of territorial sea
Leading light
Sector light
Pilot boarding place
Pilot boarding place with name
Pilot boarding place with note
Pilot transferred by helicopter
