Self-assessment questions:
What is a marine navigational chart?
What scales may the charts be?
What information can we find in the chart?
What do you know about electronic charts?
How is a chart made?
What types of charts do you know?
On what chart is a ship’s planned course plotted?
What projection is universally used in nautical charts?
Where can you find the true north on the chart?
Should we use old or uncorrected charts?
Who is responsible for chart correction on ship?
How are the depths of the water measured and indicated on the charts?
Additional information. Read and translate the symbols and abbreviations used in Admiralty Charts.
Hydrographic Terms and Abbreviations
Current form |
Term |
Translation |
Anch |
Anchorage |
|
Apprs |
Approach, Approaches |
|
B |
Bay |
|
Bk |
Bank |
|
Chan |
Channel |
|
Rf |
Reef |
|
Co rf |
Coral reef |
|
Entr |
Entrance |
|
Est |
Estuary |
|
G |
Gulf |
|
Rd |
Roads, Roadstead |
|
Shl |
Shoal |
|
Str |
Strait |
|
Approx |
Approximate |
|
D, Destr |
Destroyed |
|
Subm |
Submerged |
|
Wk |
Wreck |
|
S |
Sand |
|
M |
Mud |
|
Cy, Cl |
Clay |
|
St |
Stones |
|
G |
Gravel |
|
P |
Pebbles |
|
Rk, rky |
Rock, Rocky |
|
Co |
Coral |
|
Sh |
Shells |
|
S/M |
Two layers (shown here: sand over mud) |
|
Wd |
Weed (including Kelp) |
|
Ck |
Chalk |
|
Grd |
Ground |
|
Sn |
Shingle |
|
bk |
broken |
|
f |
fine |
|
c |
coarse |
|
so |
soft |
|
h |
hard |
|
deg |
degree(s) |
|
Lat |
Latitude |
|
Long |
Longitude |
|
brg |
bearing |
|
T |
true |
|
dev |
deviation |
|
CD |
Chart Datum |
|
ft |
Foot/feet |
|
vert |
Vertically disposed |
|
Coastline
|
Coastline, surveyed |
|
|
|
Coastline, unsurveyed |
|
|
|
Flat coast |
|
|
|
Sandy shore |
|
|
|
Stony shore, Shingly shore |
|
|
Ports
|
Breakwater (in general) |
|
Harbour Installations
|
Mole |
|
||
|
Quay, Wharf |
|
|
|
|
Pier, Jetty |
|
|
|
|
Promenade pier |
|
||
|
Pontoon |
|
|
|
|
Steps, landing stairs |
|
|
|
|
|
Designation of berth |
|
|
Types of Seabed
|
Area with stones, gravel or shingle |
|
|
Rocky area, which covers and uncovers |
|
|
Coral reef, which covers and uncovers |
|
Routing Measures: Basic Symbols
|
Established (mandatory) direction of traffic flow |
|
|
Recommended direction of traffic flow |
|
|
Separation line |
|
|
Separation zone |
|
|
Limit of restricted area |
|
|
Maritime limit in general |
|
Anchorage areas
|
|
Anchorage area in general |
|
|
|
|
Numbered anchorage area |
|
|
|
|
Named anchorage area |
|
|
|
|
Deep Water Anchorage area, Anchorage area for Deep Draft Vessels |
|
|
|
|
Tanker anchorage area |
|
|
|
Anchorage for periods up to 24 hours |
|
|
|
|
Quarantine anchorage area |
|
|
|
Restricted areas
|
|
Anchoring prohibited |
|
|
|
Fishing prohibited |
|
