Anchor - Oceanis 36 cc

[carlager]

We are in the Med with our Beneteau Oceanis 36cc and are planning to spend some of the nights anchoring.

We have the original fortress anchor, a 25m chain and 20 meter rope.

Has anyone got experience with this gear ?

 

[JimInPB]

Assuming that the anchor, chain & line are all properly sized, that should be suitable for anchoring in 7-15 meters of water. It will hold much better in 7 meters than it will in 15.

That anchor type works well in soft to medium bottoms, but not as well in rocky bottoms or bottoms with a lot of vegetation. That anchor type is sometimes not the best at resetting after a tide change. It is good practice to check the hold when the tide or wind changes substantially. You should check to see if you have an anchor that is sized as a storm anchor, a working anchor, or a lunch hook. You should also check that the chain & line are properly matched to the size of the anchor. The line should be the three strand type, not braid.

 

[Ron20324]

We are in the Med with our Beneteau Oceanis 36cc and are planning to spend some of the nights anchoring. We have the original fortress anchor, a 25m chain and 20 meter rope. Has anyone got experience with this gear ?

The chart says you need the 10-pound FX16 model. That does not sound like enough to me.

 

[JimInPB]

The chart gives you recommendations for a working anchor in moderate seas & a favorable bottom type with a minimum scope of 5:1. For heavier conditions, they recommend going up 1 or 2 columns in the chart. Poor bottom, reduced scope, choppy seas, & high winds all create a need for heavier ground tackle.

That same chart that lists recommended working anchor sizes, also gives recommendations for minimum chain & line specifications -
http://fortressanchors.com/selection-guide/fortress
http://fortressanchors.com/downloads/Fortress-Selection-Guide-F.pdf

Unless all conditions are known to be favorable, I too would prefer something a bit bigger than what is listed in the chart, to help me sleep well at night.

 

[jssailem]

As the selection of an anchor is the Captains choice it is not a question that can be answered as asked.
I look at the boat length, displacement, anticipate weather for the area I’m sailing, types of bottom for the anchorages, then make a selection that accommodates best the various factors leaning to a size bigger than the minimum and extra rode to deal with the worst expected conditions.
My boat is 35 feet and 16000 lbs displacement. Chain is 105 ft (33 meters). And rode is 250 ft (77 meters). Primary anchor is Mantus 45 lb , secondary is a 30 lb danforth with 80 feet of chain and 150 ft of rode.

You boat is 36 ft long 13228 lbs./ 6000 kgs.
The spade or Mantus are both great setting and holding anchors. They have the following charts to help with your decision.


https://www.mantusmarine.com/mantus-anchor-knowledgebase/anchor-sizing/

Good luck.