Anchor

[Seahawk345]

Quick question about anchor size. We have a H310......weighs about 9000 lbs. We have become 'fair weather" sailors.....we .do weekending , and a couple of longer trips each summer. We normally try to stay out of foul weather if we're anchoring for the night. At the moment we have quite a 12 KG Bruce anchor but would like to upgrade to a 15 Rocna. Do ya think this should be big enough or should we "upsize" it even more......I think a 25 would just be TOO big..???Will this require swapping out the bow roller to accommodate the larger curved shank..?????

Any opinions......( theres probably as many opinions as there are sailors )....

Thanx for any insight

.

 

[kappykaplan]

I'll start my response with, Not another anchor thread!
You're correct that there are many opinions. That said, a 15KG Rocna should give you plenty of holding capability. How much anchor chain and rode do you have?

 

[Davidasailor26]

I don’t know about the sizing for a boat that size, but you can print a template from the Rocna site to see how it would fit your roller. You print out a few pages and tape them together to form the full size 2D representation of the anchor, and then you can transfer that to cardboard.

 

[Joe]

According to the Rocna charts the 15 kg sizes for the original Rocna, Vulcan and newer MkII are all recommended for your 31 ft boat. If you want more security, adding more chain (5/16 is recommended) would be the direction I'd take. Also consider the age and performance of your windlass for possible upgrading if you add chain. I think you're good with the 15kg.

Rocna size chart

 

[Seahawk345]

Thanx very much for the replies. Much appreciated. Kinda confirms what I was thinking........

 

[PAC3142]

Seahawk, Have you had issues with the Bruce anchor? We use one, not sure of the weight, and it has never failed us.

 

[Seahawk345]

We have a 12.5 Kg Bruce. It hasn't failed us but we've never "really" put it to a test. It's a great l'lunch hook' and has served well in protected anchorages overnight. But it just seems "light" to me. I think I'd sleep better with a Rocna or Mantus, one size larger......

 

[jssailem]

Once set in good mud the Bruce design has served boat owners well for many years. When water and wind conditions shift direction some owners had reported issues with resetting.
Steve at SV Panope documented the issue.

He has preformed over 100 anchor tests and published the videos to prove what is happening with your anchor on the sea floor. Give his site a look. You will be amazed.