| NOS |
NIMA |
|
IHO |
 |
 |
Position of buoy |
 |
| Colors of Buoys and Beacon Topmarks |
 |
 |
Green and black |
 |
 |
 |
Single colors other than green and black |
 |
 |
 |
Multiple colors in horizontal bands. The color sequence is from top to bottom. |
 |
 |
 |
Multiple colors in vertical or diagonal stripes. The darker color is given first. |
 |
| Note: Retroreflecting material may be fitted to some unit marks. Charts do not usually show it. Under IALA Recommendations, black bands will appear blue under a spotlight. |
| Lighted Marks |
 |
 |
Lighted marks on standard charts. |
 |
|
Lighted marks on multicolored charts. |
 |
| Topmarks and Radar Reflectors |
 |
 |
IALA System buoy topmarks (beacon topmarks shown upright) |
 |
|
 |
Beacon with topmark, color, radar reflector and designation |
 |
 |
 |
Buoy with topmark, color, radar reflector and designation |
 |
| Note: Radar reflectors on floating marks are usually not charted. |
