Rocna or Vulcan 20

Anchor Weight Rocna fluke area Vulcan fluke area Rec. G40 chain Approx weight Typical WLL Typical break
20 kg
44 lb
177 in2 192 in2 9 mm
5/16"
1.80 kg/m
120 lb/100'
1000 kgf
3900 lb
4077 kgf
11700 lb
Shackle pin size Typical high load body diameter
< 12 mm < 11 mm

Southerly 32

Allied Seawind 30

Back Cove 37

Bavaria 39 Cruiser

Beneteau Oceanis 43

Bluewater 400

Catalina 380

Fountaine Pajot Mahe 36

Jeanneau Sun Odyssey 42i

Lagoon 380

Maverick 400

Najad 380

Nauticat 39

George Buehler Juna Junosdautter

Riviera M370

Southerly 32

Multi-hulls have higher windage than mono-hulls, and therefore we recommend a larger size anchor. Use the guide as instructed, then select the model one size larger.