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Go Back   SailNet Community > Skills and Seamanship > Seamanship & Navigation > Let's talk about anchors some more
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Thread: Let's talk about anchors some more Reply to Thread
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Topic Review (Newest First)
07-02-2013 06:59 PM
Mantus Anchors
Re: Let's talk about anchors some more

Main, I hear you loud and clear!
We have tons of footage but it will take a little time to organize it into a presentable fashion....
Greg
07-02-2013 04:18 PM
Maine Sail
Re: Let's talk about anchors some more

Quote:
Originally Posted by Mantus Anchors View Post
The thing not to forget is that EVERYTHING depends on the bottom, there are bottoms where a plain old Danforth will outperform a Supreme or any other design of the same weight (soft silty bottoms), we have plenty of data to back it up... Over all the new generations anchor allow for better setting ability and holding in hard packed bottoms... a more reliable set... Better package over all. To envelop the challenge of anchoring in soft bottoms we recommend to size up....
There can be a 10 fold difference holding power between a firm bottom and loose silt....
Greg,

When do we get to see the underwater setting footage??? The Manta Ray is cool, but we want anchors....
07-02-2013 02:24 PM
Mantus Anchors
Re: Let's talk about anchors some more

The thing not to forget is that EVERYTHING depends on the bottom, there are bottoms where a plain old Danforth will outperform a Supreme or any other design of the same weight (soft silty bottoms), we have plenty of data to back it up... Over all the new generations anchor allow for better setting ability and holding in hard packed bottoms... a more reliable set... Better package over all. To envelop the challenge of anchoring in soft bottoms we recommend to size up....
There can be a 10 fold difference holding power between a firm bottom and loose silt....
07-02-2013 11:25 AM
Group9
Re: Let's talk about anchors some more

Quote:
Originally Posted by Capt.aaron View Post
See that's what I mean, I think 45 pounds is to small for a 40 footer, I think you should have 60 pound danforth on your bow with 100 of 1/2 inch chain, you'll sleep better, and so will the dudes down wind of you.
A 45 pound Danforth might be too small, but a Manson is a different anchor. My 42 Catalina went through a tropical storm last year that was right on the edge of a cat one hurricane, at anchor, on a 45 pound Manson Supreme, with 160 feet of 5/16 chain in 20 feet of water, without coming unstuck. Mostly mud bottom.
07-01-2013 04:37 PM
Andrew65
Re: Let's talk about anchors some more

Quote:
Originally Posted by Capt.aaron View Post
If just one cruiser out of the over 2,000 that have veiwed this thread decides to get some bigger ground tackle, and one incident is avoided, and or one guy get's to camp on the valcano with his wife and leave his boat on the hook with out worrying about the squall that rolled in last night, Then it was worth it.
Consider your time worth spend. I`ve been a MM and have cruised the Keys and worked while my boat (home) was on the hook, peace of mind is important.

Two comments.

There is an ancient chinese proverb that goes "The nail that sticks out the farthest get hits first" -apply that however and to whomever you see fit.

...and the other one that I`ve read from someone in this forum somewheres said that he`s never heard of an a guy (gal) dragging from using a too big of an anchor.

I`m comfortable with my 35# CQR with 75m of 3/8th 100m of 1/2" and 35#Bruce with 25m of 3/8th with 100m 1/2 on the bow and a 16#Danforth with 15mm of 3/8th with 100m 1/2" off the stern. My 29ft. 8 tonn gaff rigged cutter is engineless with a windless.
09-15-2012 09:47 PM
Minnewaska
Re: Let's talk about anchors some more

Btl,

Yup, I get it. I was suggesting that it was unlikely you would carry an anchor so large that you could drag it with the motor regardless of whether the flukes were set.
09-15-2012 08:25 PM
blt2ski
Re: Let's talk about anchors some more

Minne,

Most permant anchors are mushroom types for a reason. Yeah one has to dig them in per say, but once dug in they hold in ALL directions. If I were to use a bruce per say, it would probably be 3 or 4 in some type of pyramid style setup, as they were initially designed this way on Oil rigs. IE and anchor or two/three per side of the rig.

Again, it seems to come down to proper size/wt etc along with what the design of the anchor is, vs "just" wt!

Marty
09-14-2012 03:12 PM
Minnewaska
Re: Let's talk about anchors some more

I suppose, if you can't power back against a huge anchor and drag it to bury the flukes, the wind isn't going to cause you to drag either. That seems unlikely, however.

But, of course, an anchor can be too large. Put a cruise ship anchor on a J-24 and you will sink it at the dock.
09-14-2012 12:55 PM
SloopJonB
Re: Let's talk about anchors some more

I have a question about anchors in general. Is it possible to have an anchor that's TOO big?

What I'm thinking of is this: The old Bruce anchor site, when they still made recreational anchors, recommended a 20 kilo (44Lb) Bruce as a storm anchor for my boat.

If I decided to use say a 50 kilo (110 LB) Bruce for a semi-permanent mooring, would it even set properly? Would my boat create enough drag to even bury it properly or do anchors need to be in a range of weights to work properly with a given boat's displacement, windage, engine power for reverse pull when setting and so forth?

I'm just using Bruce for illustration - the question applies to anchors in general.
09-13-2012 10:18 AM
Alternate Latitude
Re: Let's talk about anchors some more

Hello Sailnet

Just wanted to post a quick endorsement of Mantus Anchors.
I have a 44 foot Voyage Catamaran, it had a 55lb Delta. I am a charter boat Captain current'y doing charters in the galveston Bay area but am heading to the Virgin Islands this fall. The Delta worked ok, but I wanted an anchor that I would not have to think about. While catering to a boat full of guests the last thing I want to worry about is whether my anchor is going to drag in the middle of the night. On my prior boat I had a Manson Supreme which worked great, I was planning on buying one of them until I came across the Mantus at a local boat show. I decided to get the 85lb, I wanted to sleep well. I had problems getting this anchor to fit on my bow roller, after some discussions with Mantus we traded it for the smaller 65lb anchor. This fits perfectly.
I first used the anchor this past Labor Day weekend. The first night there was little wind and figured we would not have a problem dragging, what stood out in my mind was that when we backed down to set the anchor it hooked up so well that it almost jerked one of the guys off the boat. The bottom in Galveston Bay is mud, thick mud, usually when the anchor is pulled up it is completely covered, the Mantus shed most of this mud.
The second and third night were spend at another anchorage, lots more wind and we actually had a 180 wind shift and then a shift back to the original direction over a few hours. I happened to be on the boat while this happened and we never were anywhere close to pulling the anchor loose. I did watch a few other boats drag.
Although I haven't used the Mantus all that much yet I am please with my purchase, it took a lot of convincing to not go with a Manson Supreme but I am happy that I did.
If you have any questions you can contact me directly.
Captain Steve Schlosser
usvicatamaran.com
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