- 6 Oct 2012
- Southminster, essex
When our marina needs dredging my keel sinks 2 ft in the mud. My Hanse 311 has a sort. Of bulb but the top part is not flat or wide as one might imagine with a true bulb. I use an erodible anti foul on the keel & find it soon sheds any mud that might form. The keel probably makes a hole & only light silt drops on top. The tide through the mooring must move this anyway. I put 3 cts erodable anti foul on the bottom 2 ft of keel. I do some times push through the mud in the approach creek if arriving a bit early so that must not help either.I think the only keel type to be a potential problem would be a wing keel, but even then it seems unlikely. I have a blob rather than a bulb and it has never concerned me.