Object Class: Topmark

Acronym: TOPMAR (P)

Code: 144

Set Attribute_A: COLOUR; #COLPAT; HEIGHT; MARSYS; STATUS; *TOPSHP; VERACC; VERDAT; VERLEN;

Set Attribute_B: INFORM; NINFOM; NTXTDS; PICREP; SCAMAX; SCAMIN; TXTDSC;

Set Attribute_C: RECDAT; RECIND; SORDAT; SORIND;

Definition:

A characteristic shape secured at the top of a buoy or beacon to aid in its identification. (IHO Dictionary, S-32, 5th Edition, 5548)

References:

INT 1: IQ 9;

M-4: 463.1;

Remarks:

The body carrying the topmark is a separate object.

Distinction: beacon, cardinal; beacon, isolated danger; beacon, lateral; beacon, safe water; beacon special purpose/general; buoy, cardinal; buoy, installation; buoy, isolated danger; buoy, lateral; buoy, safe water; buoy, special purpose/general; daymark;