The Vulcan is Rocna’s first major design development since the launch of the highly successful and acclaimed Rocna anchor itself.
It features a unique combination of shank and fluke geometry – including an innovative roll-palm at the rear of the fluke – which self-rights the anchor on the seabed without the use of a roll-bar.
This is assisted by the V-bulb that extends fluke ballast downward to gain maximum leverage and efficiency.
This development permits a larger fluke surface area than competing designs which rely on simple dead weight, while the concave fluke allows for more holding power and security.
The shank profile ensures a snug fit on the bows of a widely expanded range of vessels; platforms, bowsprits, prods, stays, and other protrusions are easily cleared with no hassle or inconvenience.
The Vulcan’s shank shape encourages self-launching and self-stowing upon retrieval on the majority of bow rollers, with a liquid smooth action, ensuring ease of use for all operators.
This visually elegant innovation also improves setting performance, with the lower V edge cutting into the seabed and minimizing resistance to a deep and secure burial.
Vulcan anchors are available in 10 sizes from 4 kg (9 lb) – 55 kg (121 lb) to suit vessels from small runabouts to larger launches.
Dimensions (see diagram within images):
| Suggested |
Anchor Size |
Dimensions (mm) |
| Boat Size (m) |
(lb) |
(kg) |
A |
B |
C |
D |
E |
F |
Width |
| 4 - 7 |
9 |
4 |
472 |
142 |
145 |
46 |
119 |
67 |
258 |
| 5 - 9 |
13 |
6 |
541 |
163 |
167 |
53 |
136 |
77 |
296 |
| 6 - 10 |
20 |
9 |
619 |
186 |
191 |
61 |
156 |
88 |
339 |
| 7 - 12 |
27 |
12 |
681 |
205 |
210 |
67 |
172 |
97 |
373 |
| 8 - 14 |
33 |
15 |
734 |
221 |
226 |
72 |
185 |
104 |
402 |
| 9 - 16 |
44 |
20 |
808 |
243 |
249 |
79 |
204 |
115 |
442 |
| 10 - 18 |
55 |
25 |
870 |
262 |
268 |
85 |
220 |
124 |
476 |
| 12 - 22 |
73 |
33 |
955 |
287 |
294 |
93 |
241 |
136 |
522 |
| 14 - 24 |
88 |
40 |
1018 |
306 |
313 |
100 |
257 |
145 |
557 |
| 16 - 26 |
121 |
55 |
1132 |
340 |
349 |
111 |
286 |
161 |
619 |
Boat Length and weight vs recommended anchor size:
| Boat L (m) |
4kg |
6kg |
9kg |
12kg |
15kg |
20kg |
25kg |
33kg |
40kg |
55kg |
| 4m |
< 2T |
|
|
|
|
|
|
|
|
|
| 5m |
< 1T |
< 5T |
|
|
|
|
|
|
|
|
| 6m |
< ½T |
< 3.5T |
< 7T |
|
|
|
|
|
|
|
| 7m |
< ½T |
< 2T |
< 6T |
< 9T |
|
|
|
|
|
|
| 8m |
|
< 1T |
< 5T |
< 8T |
< 12T |
|
|
|
|
|
| 9m |
|
< ½T |
< 4T |
< 7T |
< 10T |
< 16T |
|
|
|
|
| 10m |
|
|
< 3T |
< 6T |
< 8.5T |
< 14T |
< 22T |
|
|
|
| 11m |
|
|
|
< 5T |
< 7T |
< 12T |
< 20T |
|
|
|
| 12m |
|
|
|
< 4T |
< 6T |
< 10T |
< 18T |
< 30T |
|
|
| 14m |
|
|
|
|
< 4T |
< 6T |
< 13T |
< 23T |
< 40T |
|
| 16m |
|
|
|
|
|
< 3T |
< 9T |
< 18T |
< 32T |
< 60T |
| 18m |
|
|
|
|
|
|
< 5T |
< 14T |
< 25T |
< 50T |
| 20m |
|
|
|
|
|
|
|
< 10T |
< 18T |
< 40T |
| 22m |
|
|
|
|
|
|
|
< 6T |
< 12T |
< 33T |
| 24m |
|
|
|
|
|
|
|
|
< 7T |
< 25T |
| 26m |
|
|
|
|
|
|
|
|
|
< 18T |