What weight Anchor?

[thornbackflound]

Hi all going to the boat jumble at detling next sunday,aim to pick up some rope,warp chain and anchor for the 4m sib and 20hp 2 stroke outboard,what weight Anchor do i need to keep this set up and 3 people at anchor in 25 foot of water ,how long should my warp chain be?any ideas please ,i have no probs with my small set up,i generaly go for the fold up grapnel weights,so what size would be best?

[willk]

I'm considering the same question for my 2.7m tender. I expect to be making short "hops" in it so want to be able to hold position if the outboard has a sickie, and hold her off beaches.

I'm thinking maybe a wee 2kg Bruce with about 3m of light chain and the 10mmX25m trip line that I have on the 6.5m? It's a very compact package. It should fit in a small cordura bag with the tools and WD40 and stuff...

Any fans of little grapnels on SIBs here?

[Polwart]

Thorny,

My set up is very similar to yours. It happily sits at anchor in any conditions I've been comfortable in with:

2.5 kg anchor (I have both a Danforth and a Bruce style (its a long story!) - the Bruce hasn't been tested much - but I did leave her overnight on it).

Chain - 6mm diam = length of boat (4m+).

Rope - (I think mine is 8mm but it might be 10?) spliced to the chain. Length = 5x the greatest depth you might want to anchor in (so in your case ATLEAST 40m.)

[Downhilldai]

I've used a 2-ish Kg folding grapnel on a 3.1m SIB and it's fine. It stows away in a small rucksack with around 20m of 10mm rope and a bit of chain. I tie the rucksack to the tube, 'cos it can hurt your foot when it's dancing around on deck.

[thornbackflound]

Many thanks for the info gents,excellent