Applies To |
The following S-57 Object Class objects, but only when they carry the attribute RESTRN:
TSSLPT, TSSRON, TSSCRS, DWRTPT, PRCARE, ISTZNE;
FAIRWAY, DRGARE, ACHARE;
CBLARE, PIPARE, DMPGRD, MARCUL;
OSPARE, SUBTLN, SPLARE, MIPARE, ICNARE;
TESARE
|
SpatialObject(s) | Area |
Parameter(s) | Object to be symbolized from ENC. |
Defaults | Symbolization given by the look-up table
Display Priority given by look-up table
OVERRADAR priority given by look-up table
Display Category given by look-up table
Viewing Group given by look-up table
|
Remarks |
Objects subject to RESTRNnn are actually symbolised in sub-process RESCSPnn, since the latter can also be accessed from other conditional symbology procedures.
RESTRNnn merely acts as a «signpost» for RESCSPnn.Object class RESARE is symbolised for the effect of attribute RESTRN in a separate conditional symbology procedure called RESAREnn.
Since many of the areas concerned cover shipping channels, the number of symbols used is minimised to reduce clutter. To do this, values of RESTRN are ranked for significance as follows:
“Traffic Restriction” values of RESTRN:
(1) RESTRN 7,8: entry prohibited or restricted
RESTRN 14: IMO designated «area to be avoided» part of a TSS
(2) RESTRN 1,2: anchoring prohibited or restricted
(3) RESTRN 3,4,5,6: fishing or trawling prohibited or restricted
(4) “Other Restriction” values of RESTRN are:
RESTRN 9,10: dredging prohibited or restricted,
RESTRN 11, 12: diving prohibited or restricted,
RESTRN 13: no wake area.
|