Is a 125 Pound Anchor Too Big for a 50' Cat ?

[boasun]

125 lbs for your 50' cat would be for a perminet mooring. But for hanging off the bow while underway you may only want 45 ~ 60 lb. Pending on how paranoid you are on your anchor holding capabilities.

[cat man do]

Originally Posted by SailFastTri

30 feet of water at 5:1 scope is 45 meters (not 9), not including freeboard.

No, you motor up onto the anchor
Chain sinks so at any given time, you are only lifting from top of water or front beam to bottom of water
The rest of the chain is still lying stretched out on the ocean floor

If you're concerned about weight you could cut your chain in half and use rope for the remainder, especially considering you'll rarely if ever have more than 150 feet out, and if you do use the rope in deeper water or storms -- the rope will likely be suspended up off the bottom anyway.

maxwell 1500 (LP) is chain only

[cat man do]

Originally Posted by boasun

125 lbs for your 50' cat would be for a perminet mooring.

Which it will be as a liveaboard
I have never felt comfortable going ashore while at anchor on any vessel I have owned, but I reckon with this anchor I will.

But for hanging off the bow while underway you may only want 45 ~ 60 lb.

Powercat so,
It has no mast so carries LESS weight toward the bow
It has larger engines, shafts etc so carries MORE weight towards the stern
Larger tankage means MORE weight towards the stern

I think it will well benefit from some additional weight towards the bows and really, on a 50fter do you think an extra 45lbs will affect its performance and handling that much?

Pending on how paranoid you are on your anchor holding capabilities.

Very paranoid when its blowing a gale and pissing down rain at 2am , especially if there was a wind shift now putting me towards a lee shore or if in a reef strewn or tight anchorage.

I think the answer is, yes, it is to big
Until it's not.

[Sabbatical II]

Well with 125lbs it won't be your anchor gragging in a storm and anyone that blows down on you, just put yer fenders out out cleat them off. You should be able to hold everyone.

Greg

[stillbuilding]

+1 for nicely adequate for your purpose.

The extra weight is small beer for your boat so why not. Higher Windage vs lighter displacement arguments in there but 125 sounds good to me. Have a friend with a 70' cat who uses 300 lb for standard anchor - dragged everything before this .

[Delfin]

Originally Posted by cat man do

Like the heading says is it to big to go on a 50 ft 8700kg (19200lb) powercat,

The experts say 60lb is good
80 lb is plenty
But, can you have to much anchor if you get the anchor for the right price?

My main concern is getting it back aboard as I have a Maxwell 1500 rated for a 680kg lift

So Anchor = 125lb (57kg)
84m of 10mm chain =201kg
Total = 258kg
X 3 for safe lift = 774kg

BUT, as I would mostly anchor in 15 ft of water and rarely over 30 ft, its never really going to be lifting any more than 9 metres of chain + the anchor which is more like 80kg at any one time.

Comments?

Worst case, you'd anchor at 2:1,meaning maximum lift would be 157 kg. The windlass is a bit smaller than ideal, but that just means that you should not use it for anything other than lifting, not so much breaking out which can be done with wave surge. You can't have an anchor that is too big. The efficiency of anchors goes up dramatically when gravity results in them digging in which is why the Manson Ray tested superior to the Rocna or Manson Supreme in heavier weights.

One opinion.....

[cat man do]

Originally Posted by Delfin

Worst case, you'd anchor at 2:1,meaning maximum lift would be 157 kg.

As mentioned before

Originally Posted by cat man do

No, you motor up onto the anchor
Chain sinks so at any given time, you are only lifting from top of water or front beam to bottom of water
The rest of the chain is still lying stretched out on the ocean floor

and heres a picture

[cat man do]

Well I got it and what a win
Plus pick up is 15 minutes from home so zero freight

[barnakiel]

If your winch can handle the kit, it ain't too big!

Start using it and see how it handles. You can go to a smaller anchor if there is any reason the one mentioned seems too big.

b.

[cat man do]

I think all of the above are covered

Windlass on paper is more than powerful enough
25kg delta for a smaller anchor

[cat man do]

Is a 125 Pound Anchor Too Big for a 50' Cat

Maybe.

I have to say I was shocked and horrified at how big it was when I pulled in for pickup and saw it sitting in the driveway and doubly so when it wouldn't fit in the boot of a 6 cylinder Holden Commodore (Chevrolet Lumina for the yanks)

[cchesley]

That'll do just fine for ya mate!

[Weyalan]

Originally Posted by cat man do

Like the heading says is it to big to go on a 50 ft 8700kg (19200lb) powercat,

The experts say 60lb is good
80 lb is plenty
But, can you have to much anchor if you get the anchor for the right price?

My main concern is getting it back aboard as I have a Maxwell 1500 rated for a 680kg lift

So Anchor = 125lb (57kg)
84m of 10mm chain =201kg
Total = 258kg
X 3 for safe lift = 774kg

BUT, as I would mostly anchor in 15 ft of water and rarely over 30 ft, its never really going to be lifting any more than 9 metres of chain + the anchor which is more like 80kg at any one time.

Comments?

My understanding of the situation (such as it is) is that if I'm gonna carry more weight, I'd rather carry more chain than more anchor. However I'm not sure that there is, necessarily, a "right" answer. Go with what allows you to sleep at night.

I'd take 2 anchors, with their own chain and rope. For me, the "sleep at night" test for a boat of 9 ton would probably be to carry a 60lb anchor with 30m chain and 30m rode in "normal" conditions and an 80lb anchor with 50m chain and 50m rode for extreme conditions, but that is't the right answer, it's just right for me.

[cat man do]

Originally Posted by Weyalan

and an 80lb anchor with 50m chain and 50m rode for extreme conditions,

That was to be it for me as well for all conditions and an 80lber was about to be ordered.

But 80lbers are advertised at being
Winch Solutions $879
60lbers are
BIAS $800
Whitworths $800

Or what I got, 125 lb for $580

[stillbuilding]

Originally Posted by cat man do

That was to be it for me as well for all conditions and an 80lber was about to be ordered.

But 80lbers are advertised at being
Winch Solutions $879
60lbers are
BIAS $800
Whitworths $800

Or what I got, 125 lb for $580

Is this the one off EBay in Brisbane?
Price is good. I thought about it as a 'lunch hook' but realized this is BS and there is no such animal. I reckon you will stay pleased with this weight.