Object Class: Buoy, safe water

Acronym: BOYSAW (P)

Code: 18

Set Attribute_A: *BOYSHP; *COLOUR; #COLPAT; CONRAD; DATEND; DATSTA; MARSYS; NATCON; NOBJNM; OBJNAM; PEREND; PERSTA; STATUS; VERACC; VERLEN;

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

Set Attribute_C: RECDAT; RECIND; SORDAT; SORIND;

Definition:

A buoy is a floating object moored to the bottom in a particular place, as an aid to navigation or for other specific purposes. (IHO Dictionary, S-32, 5th Edition, 565).

A safe water buoy is used to indicate that there is navigable water around the mark. (UKHO NP735, 5th Edition)

References:

INT 1: IQ 130.5;

S-4: 461;

Remarks:

A safe water mark may be used as a centerline, mid-channel or landfall buoy, or to indicate the best point of passage under a fixed bridge.

Topmark, light, fog signal, radar reflector and retro-reflector are separate objects.

Distinction: buoy cardinal; buoy lateral; buoy isolated danger; buoy special purpose/general; mooring/warping facility;