Rocna or Vulcan 4

Anchor Weight Rocna fluke area Vulcan fluke area Rec. G40 chain Approx weight Typical WLL Typical break
4 kg
9 lb
71 in2 65 in2 6 mm
1/4"
0.80 kg/m
84 lb/100'
400 kgf
2600 lb
1630 kgf
7800 lb
Shackle pin size Typical high load body diameter
< 8 mm < 7 mm

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.