OCC Forums

Anchor Buoys

https://forum.oceancruisingclub.org/Topic477.aspx

By bbalme - 30 Jul 2012

Relatively new to sailing, when I bought my second boat - a serious cruiser - it came with an anchor buoy - a round float and about 40ft of rope. I decided to use it from time to time - thinking that it would be neat to know where the anchor is, it might prevent people anchoring in exactly the same spot and if I fouled the anchor, it gives me a tripping line to retrieve the anchor with. I have never been religious in using it however - probably less than 20% of the time...

Recently on various websites I 've been reading about people being fed up with boats that deploy anchor buoys. I 'm not exactly sure of the reasons why - maybe someone here can enlighten me.

HOWEVER: I 've been off on a trip the last couple of weeks, travelling in tandem with friends on another boat. We came to anchor in Port Jefferson on Long Island, NY and anchored sensibly close together for sociability - not so close as to represent a threat. In the afternoon, a squall passed through and I watched with horror as my friend 's boat sailed around her anchor, with our anchor buoy passing between the stern of their boat and their dingy. Any closer and the buoy could have been collected by their rudder - and simply tripped our anchor as they continued to sail around theirs.

We remained lucky - but as soon as the squall passed, we upped anchor and removed the offending buoy.

Safe to say, I don 't think I 'll be using the anchor buoy again anytime soon - unless alone in a fouled anchorage perhaps...
By DariaBlackwell - 31 Jul 2012

Hi Bill,

Anchor buoys and trip lines remain controversial. Some people say they take up too much space in an anchorage. It may depend on the size of the anchorage and how close boats need to be to one another, what the potential is for someone to drop anchor on top of yours especially if you have a lot of rode out, and how likely the anchor is to foul in the given bottom. In a place like Port Jeff where there is oodles of room and a soft bottom, you are less likely to need one.

Most people complain about trip lines in tight anchorages. They like to have their swing radius overlap significantly to allow more scope which they cannot do if you have an anchor buoy out. We like to prevent people from overlapping that much if possible since every boat swings a bit differently. We don 't like to play bumper boats in the night if there is a wind or current shift.

Your example is one that must be seriously considered. Any time you add gear you add potential complications. Our friends sailing in the Caribbean had their trip line pulled up and their boat set adrift in the middle of the night as one of the locals thought someone had set down a competing mooring. We watched a boat pull up to our buoy and try to pick it up thinking it was a mooring. It 's a risk.

Losing an anchor is an expensive proposition for us. As we have had one anchor so jammed that we 've had to cut it away, we tend to use trip lines rather often. We use nylon rope so it sinks and doesn 't foul dinghy props. We label our buoy with our boat name so it 's clearly associated with us and not confused with a mooring. And still these precautions wouldn 't help in the situation you describe.

As there are ways to retrieve a fouled anchor without a trip line these days, perhaps setting aside the anchor buoy for the foulest of bottoms is the way to go.

Happy Hooking!
By bbalme - 31 Jul 2012

Thought you might like to see a picture of the event. Our anchor buoy is visible on the starboard side of our friends on Jamin...

I would absolutely HATE to lose our 80lb Manson and 275ft of chain because of a fouled anchor and wonder about putting a spool of line on the pulpit? It would seem to make the whole deployment/retrieval process far more complicated however...

I wonder if there 'd be a way to link the windlass to an electric winder on the spool - so that when retrieving, the spool takes up the slack in the trip line. The trip line could maybe be fishing line - such that if it 's needed, then use it as a messenger to send down a thicker trip line...

All too complex?
By DariaBlackwell - 19 Aug 2012

Yep, sounds complicated.

In our book, "Happy Hooking. The Art of Anchoring." we describe a way to retrieve a stuck anchor by shimmying a length of chain down the rode to the crown of the anchor from a dinghy; that 's after taking up the slack in the rode. Then you can use the dinghy to pull almost horizontally by the crown to free the anchor.

There are also commercial anchor retrieval systems like Anchor Rescue, Anka-Yanka, and Anchor Witch among others. The Anchor Witch website has a demo video that shows it retrieving a Rocna.

We 've only had one instance where that did not work. A friend anchored in a mooring field (always a bad idea)and got his anchor 's tip stuck in a link of a massive chain. It was wedged in so hard that it took several divers with equipment to free it. Neither a trip line nor any other retrieval system would have helped in that case.
By simoncurrin - 22 Aug 2012

I just read about a magnetic tripping line which would seem to eliminate the need for buoys. A 20 metre line is shackled to the tripping point on the anchor and the other end to the chain as it is run out. Every 3 metres a magnet adheres the line to the chain thus eliminating (hopefully) the problems Bill has described.

I have no idea whether it works but it is an interesting idea.
By bbalme - 30 Jan 2013

So, having convinced myself that an anchor buoy was more trouble than it 's worth, and having read accounts from sailors for whom I have the utmost respect - which indicates that they essentially never needed to empoy the services of a trip line... I now read in The RCC Pilotage Foundation pilot book 'Atlantic Islands ' (recommended reading for our upcoming trip to the Azores) that Trip Lines are "highly recommended" in most anchorages of the Azores with their rocky bottoms...

I 'm now second guessing my decision and would appreciate someone inspiring me to have more backbone - or conversely to get sensible and bring along a trip line!

What 's it to be?
By simoncurrin - 30 Jan 2013

Bill,

We were anchored of Gracisoa in the Azores in 2002 then our anchor chain wrapped around a huge boulder and jammed. We had SCUBA gear aboard for just such an eventuality and this was the first and last time we had to use it to retrieve the anchor.

Simon
By DariaBlackwell - 30 Jan 2013

Bill,

How expensive is your anchor if you have to cut it away vs. how much hassle would it be to carry a trip line? Then again, like Simon says, you can always go for a swim.

Daria
By bbalme - 30 Jan 2013

When I researched this hole thing a couple of months back, I got a pretty resounding opinion that anchor buoys were a pain in the anchorage and possibilities of being inadvertently tripped. Indeed, in my first post on this topic I try to describe the sinking feeling I had while watching my friend 's boat sail around my anchor buoy while we were enduring a rather nasty squall. The buoy even passed between his rudder and keel - somehow not getting tripped... Had it tripped, had we not been up and about, we might have lost more than the anchor!

I 'm not much of a swimmer and not equipped with skuba gear - so maybe in a deserted anchorage with a rocky bottom, there 's a place for one of these things...
By BillonAdvent2 - 5 Feb 2013

One may try attaching a "specrta", or other high strength fiber line to the trip point of the anchor. Tie the trip line every few feet to the chain using electrical cable ties (zip ties). The fiber line needs to be somewhat longer than the water depth. To release the anchor, go to up-and-down with the rode, and attach another line to the trip lne. Then reverse the boat to max scope. Go to the second line and yank up, breaking the cable ties down to the anchor, and pull up on the trip point. Similar to the magnet system mentioned earlier. This will only work if the rode does not have a twist,which may be able to be verified and corrected when the anchor rode is up-and-down. This system may be left in place and used when needed.
Bill Doar
s/v Advent II
By Dick - 30 May 2015

Hey all,
I just finished this letter to the editorof Practical Sailor (US):
One almost side comment (the author) wrote did disturb me, as I am sure many will want to do as he does. He uses a “small float and some buoyant polyethylene line” to mark where his anchor is dropped “a useful signal to late arrivals in a crowded anchorage”.
I would wish boaters to consider and anchor buoy as a rarely used item, when bottom conditions are reported foul and snagging the anchor likely. The following are my concerns:
In a crowded anchorage, or any anchorage shared, and anchor buoy hogs real estate. With it another boat is unable to swing over the spot where the anchor buoy resides without worrying that his prop or rudder might get hung up on it. This essentially means the boat with the anchor buoy is taking up almost 2 spots.
Neighbourly behaviour aside, an anchor buoy (and its floating line) is a danger to the boat that is using it. I have seen other boats snag the buoy in wind shifts by swinging into it and pulling the anchor out. I have also seen (and experienced myself) the same happen in tidal current shifts and when you drift over it in light air. Lastly, I was enjoying a beer in the cockpit when I hear a neighbour screaming at another boat who had just picked up his anchor buoy thinking it was a pick-up buoy for a mooring.
Anchor buoys certainly have a place, but I would suggest only on rare considered occasions and not in everyday anchoring life.
Thank you, Dick Stevenson, s/v Alchemy
By Dick - 30 May 2015

Hi again,
A few suggestions to mitigate the need for an anchor buoy:
Tie a short (1 meter or so) line to the end of your anchor with a float and loop at the end. It floats free of a buried and tangled anchor. Then a trip line can easily be clipped on free diving or scuba. If stuck, do not hesitate to use the resources of the anchorage. Many can free dive to 25-30 feet and many will have scuba.
Use an anchor that sets fast and stays put: a Spade or Rocna come first to mind while a Manson may do as well. An anchor plowing away for a distance to set or dragging in a blow is an anchor looking for trouble.
Use extra scope to set your anchor quickly, then return to a chosen rode length.
I carry full scuba gear, mostly for emergencies to go deep for the anchor, but which is nice for prop wraps, zinc changes, bottom cleaning and recreation as well.
In many thousands, probably tens of thousands, of anchoring, I have fouled an anchor once (eventually pulled out backwards with full chain out) and never lost an anchor. I believe I do not know anyone who has lost an anchor (though I suspect I do). So, I would suggest, a fouled anchor is not common in everyday anchoring.
I have come close a few times to asking someone to remove (or tie back) their anchor buoy when it has made choosing a spot to anchor more difficult. I too prefer non-overlapping circles around the anchor, but this is often not possible. The anchor buoy can be removed and the line pulled back to the boat or dropped to the bottom. I suspect the response I would receive to this request would be similar to my asking someone to sacrifice their first born child.
My best to all, even those who use anchor buoys,
Dick Stevenson, s/v Alchemy
By Dick - 30 May 2015

Simon, I found that same rock in Graciosa. All of a sudden we were short scoped and yanking heavily on the snubber in a rising chop having effectively shortened our rode length by half by wrapping it around the rock in light airs and current. We circled our way free. Later diving on the area, I have never seen so many rocky protuberances emerging from a bottom of clear flat sand like that before in any anchorage, and hope never to again.
Dick Stevenson, s/v Alchemy
By simoncurrin - 30 May 2015

We should pass this intelligence onto Anne Hammick as I know she is revising her cruising guide.
Simon
By DariaBlackwell - 30 May 2015

[quote="simoncurrin" post=2134]We should pass this intelligence onto Anne Hammick as I know she is revising her cruising guide.
Simon[/quote]

She just emailed me from Horta so your timing is perfect.
By DariaBlackwell - 30 May 2015

There are a number of relatively new products that assist with anchor retrieval.

The Anchor Witch was tested and reported on at Attainable Adventure Cruising. https://www.morganscloud.com/2012/11/15/review-of-anchorwitch/.

We have just obtained an Anchor Rescue system for testing http://www.anchorrescue.com/ and will be reporting on it shortly at CoastalBoating.net.