*Scope of application.
1) This standard stipulates the classification and specifications, technical requirements, experimental methods and other general technical conditions of China's coastal and inland navigation buoys.
2) This standard applies to the design, manufacture, testing and inspection of coastal and inland navigation buoys in China.
*Classification and specification.
Classification.
1) Depending on the material used, the buoy is divided into steel buoys and non-steel buoys; Depending on the seasonal sea conditions used, buoys are divided into ordinary buoys and ice zone buoys.
2) Steel buoy refers to a buoy whose floating material is structural steel and other metal materials; Non-steel buoy refers to a buoy with non-metallic materials such as plastic and frucco, frped and other non-metallic materials on the surface of the float.
3) Ordinary buoys are mainly cylindrical buoys, and their structure is composed of top markers or lookouts, brackets, floats, tailpipes, balance irons, which can be equipped with lamps, radar reflectors, radar transponders, solar panels, label display devices, etc., and there are anchorage equipment under them.
4) The buoy in the ice area is mainly a rod buoy or a cylindrical buoy, and its structure is composed of a float, a tail pipe, and a balance iron, which can be equipped with a lamp, a radar reflector, and an anchorage device under it.
2. Specification.
1) The specifications of ordinary buoys are Φ0.6m, Φ1.2m, Φ1.5m, Φ1.8m, Φ2.4m, Φ3.0m.
2) The specification of ice buoys are Φ1.2m, Φ1.5m.
3. Basic parameters.
The specification of steel buoys
| No. | specification | diameter (m) | buoy draft (m) | freeboard height (m) | focal height(m) | depth of the steel hull (mm) | suitable anchor chain (mm) | suitable sinking stone (t) |
| 1 | Φ0.6m | 0.6 | >0.5 | >0.3 | >1.5 | 2.5 | 11 | 0.2 |
| 2 | Φ1.2m | 1.2 | >1.0 | >0.5 | >2.0 | 4.0 | 17.5 | 0.5~1 |
| 3 | Φ1.5m | 1.5 | >1.2 | >0.6 | >2.5 | 5.0 | 22 | 1~2 |
| 4 | Φ1.8m | 1.8 | >2.5(deep water) >1.0(shallow water) | >0.7 | >3.0 | 8.0 | 28 | 2~3 |
| 5 | Φ2.4m | 2.4 | >3.0(deep water) >1.0(shallow water) | >0.9 | >4.5 | 8.0 | 34 | 3~6 |
| 6 | Φ3.0m | 3.0 | >3.6 | >1.0 | >6.0 | 10 | 38 | 5~8 |
The specification of non-steel buoys.
| No. | specification | diameter (m) | buoy draft (m) | freeboard height (m) | focal height(m) | depth of the steel hull (mm) | suitable anchor chain (mm) | suitable sinking stone (t) |
| 1 | Φ0.6 | 0.6 | >0.5 | >0.3 | >1.5 | 6 | 11 | 0.2 |
| 2 | Φ1.2 | 1.2 | >1.0 | >0.5 | >2.0 | 8 | 17.5 | 0.5~1 |
| 3 | Φ1.5 | 1.5 | >1.2 | >0.6 | >2.5 | 10 | 22 | 1~2 |
| 4 | Φ1.8 | 1.8 | >2.5(deep water) >0.7(shallow water) | >0.7 | >3.0 | 10 | 28 | 2~3 |
| 5 | Φ2.4 | 2.4 | >3.0(deep water) >1.0(shallow water) | >0.9 | >4.5 | 12 | 34 | 3~6 |
| 6 | Φ3.0 | 3.0 | >3.6 | >1.0 | >6.0 | 15 | 38 | 5~8 |
The specification of steel ice buoys:
| No. | specification | diameter (m) | buoy draft (m) | freeboard height (m) | focal height(m) | depth of the steel hull (mm) | suitable anchor chain (mm) | suitable sinking stone (t) |
| 1 | Φ1.2 | 1.2 | >2.0 | >2.0 | >2.5 | 6 | 28 | 0.5~1 |
| 2 | Φ1.5 | 1.5 | >4.0 | >2.5 | >3.0 | 8 | 28 | 1~2 |
The specification of Non-steel ice buoys:
| No. | specification | diameter (m) | buoy draft (m) | freeboard height (m) | focal height(m) | depth of the steel hull (mm) | suitable anchor chain (mm) | suitable sinking stone (t) |
| 1 | Φ1.2 | 1.2 | >2.0 | >2.0 | >2.5 | 10 | 28 | 0.5~1 |
| 2 | Φ1.5 | 1.5 | >4.0 | >2.5 | >3.0 | 12 | 28 | 1~2 |
4,Operating characteristic.
The operating characteristic of steel buoys.
| No. | specification | Swing period (s) | Maximum swing angle(°) | visual distance of day buoy (n mile) | Light range (n mile) | Radar detection distance (n mile) | Anchor depth(m) |
| 1 | Φ0.6 | 3~5 | ≦15 | >0.5 | 0.5 | 0.5 | 2~10 |
| 2 | Φ1.2 | 3~5 | ≦15 | >1 | >1 | >1 | 3~15 |
| 3 | Φ1.5 | 3~5 | ≦15 | >1.5 | >1.5 | >1.5 | 4~20 |
| 4 | Φ1.8 | 3~5 | ≦15 | >2 | >2 | >2 | 6~30 |
| 5 | Φ2.4 | 3~5 | ≦15 | >3 | >3 | >3 | 10~50 |
| 6 | Φ3.0 | 3~5 | ≦15 | >4 | >4 | >4 | 15~60 |
The operating characteristic of Non-steel buoys.
| No. | specification | Swing period (s) | Maximum swing angle(°) | visual distance of day buoy (n mile) | Light range (n mile) | Radar detection distance (n mile) | Anchor depth(m) |
| 1 | Φ0.6 | 3~5 | ≦15 | >0.5 | 0.5 | 0.5 | 2~10 |
| 2 | Φ1.2 | 3~5 | ≦15 | >1 | >1 | >1 | 3~15 |
| 3 | Φ1.5 | 3~5 | ≦15 | >1.5 | >1.5 | >1.5 | 4~20 |
| 4 | Φ1.8 | 3~5 | ≦15 | >2 | >2 | >2 | 6~30 |
| 5 | Φ2.4 | 3~5 | ≦15 | >3 | >3 | >3 | 10~50 |
| 6 | Φ3.0 | 3~5 | ≦15 | >4 | >4 | >4 | 15~60 |
The operating characteristic of steel ice buoys.
| No. | specification | Swing period (s) | Maximum swing angle(°) | visual distance of day buoy (n mile) | Light range (n mile) | Radar detection distance (n mile) | Anchor depth(m) |
| 1 | Φ1.2 | 3~5 | ≦15 | >1 | >1 | >0.5 | 3~15 |
| 2 | Φ1.5 | 3~5 | ≦15 | >1.2 | >1.2 | >0.5 | 4~20 |
The operating characteristic of Non-steel ice buoys.
| No. | specification | Swing period (s) | Maximum swing angle(°) | visual distance of day buoy (n mile) | Light range (n mile) | Radar detection distance (n mile) | Anchor depth(m) |
| 1 | Φ1.2 | 3~5 | ≦15 | >1 | >1 | >0.5 | 3~15 |
| 2 | Φ1.5 | 3~5 | ≦15 | >1.2 | >1.2 | >0.5 | 4~20 |
| Paint matching system | dry film thickness (μm) | |
| supporting facilities 1 | Epoxy antirust primer Chlorinated rubber intermediate layer ( selection) Long-lasting antifouling coatings ( no organics) | >200 ≥40 >200 |
| supporting facilities 2 | Chlorinated rubber antirust primer Long-lasting antifouling coatings ( no organics) | >200 >150 |
The dry film thickness of the paint above the buoy waterline.
| Paint matching system | dry film thickness (μm) | |
| supporting facilities 1 | Epoxy antirust primer Repaint polyurethane topcoat ( or Modified epoxy topcoat) | ≥150 ≥75 |
| supporting facilities 2 | Chlorinated rubber antirust primer Chlorinated rubber topcoat ( or Acrylic topcoat) | ≥150 ≥120 |
