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Sea Anchors on Monohulls

S/M-2 Little Harbor 40 Yawl

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MAMBOS/M-2

Little Harbor 40 Yawl

39'11" x 11 Tons, Full Keel & Centerboard

24-Ft. Dia. Parachute Sea Anchor

Force 9-10 Conditions

 

File S/M-2, obtained from Charles W. Turner, Marblehead MA. - Vessel name Mambo, hailing port Marblehead, Little Harbor 40 yawl, designed by Ted Hood, LOA 39' 11" x LWL 29' 7" x Beam 11' x 11 Tons - Full keel with bronze centerboard drawing 10' 6" when down, (draft 4' 3" with board raised at sea anchor) - Sea anchor: 24-ft. diameter cargo type parachute on 120' x 1" dia. three strand rode & 1/2" swivel - Full trip line - Deployed in 1964 in deep water, approx. midway between Bermuda and Nantucket Light, within the Gulf Stream, with the wind estimated at between 40-60 knots with seas 25' and greater - Vessel's bow yawed 10° - Drift was estimated to be 40 n.m. during 12 hours at sea anchor - mainly due to the motion of the Gulf Stream.

 

Chapter eighteen of Coles's Heavy Weather Sailing is entitled Twice Rolled Over. It is about the trials and tribulations of the 39-ft. centerboard yawl Doubloon, whose 3/4-inch-thick bronze centerboard was "bent about 30 degrees, probably when it hit the water as the yacht came back to even keel after the roll over." Doubloon was forced to run before 60-knot winds off the Carolina coast in the spring of 1964. The skipper, Joe Byars, tried a variety of traditional tactics in an effort to "keep the sea."

First, he tried running before the wind under bare poles. It worked for a while, but after taking five full smashes from astern (resulting in one crewmember being temporarily swept overboard) he changed course and put Doubloon on a broad reach, trying to work the boat out of the storm and the Gulf Stream.

This new tactic seemed to work for a while. Three hours later, however, the yacht was unexpectedly struck by a breaking wave and knocked down on her beam end.

Byars tried lying a-hull next. With her centerboard down Doubloon lay quietly with her bow some 70° off the wind for four hours. Then, suddenly, a wave broke and rolled her completely - 360-degrees in about five seconds. Six hours later she was smash-rolled for the second time. All the crew sustained injuries - Byars broke a rib - and there was havoc down below.

The next day the crew managed to improvise "sea anchors," one of which consisted of a working jib, with the head attached to the tack to create more drag. Two mattresses were also lashed onto the remains of the stern pulpit in order to create windage aft. Doubloon took no more knockdowns.

A few months later, in June 1964, another sailboat called Mambo, practically identical to Doubloon, encountered similar conditions in the same area of the Gulf Stream, but used a parachute sea anchor. Mambo was on the homeward leg of the Bermuda Race when, at daybreak, the wind freshened from the NE and quickly built up to Force-9. This was followed by a build-up of the seas, and it wasn't long before the waves were big enough to completely blanket the wind when Mambo was in a trough.

Mambo's skipper, Charles W. Turner of Marblehead, Massachusetts, a moderately experienced sailor, had the boat running before the seas initially. A short time later, as conditions continued to deteriorate, a trusted and more experienced crewmember suggested that it seemed high time to turn the boat around and face into it.

The decision was then made to try to heave-to in the traditional way - by using sails. However severe cross-waves made it impractical to do this.

Another crewmember then pointed to the 24-ft. diameter para-anchor on the cabin sole which the owner had purchased. He stated, "Since you had us practicing with that thing off Marblehead, why not try it now?" The skipper decided that this was a good time to try it, since the man who had ridiculed it in Marblehead now appeared to favor its use.

It took three tries to accomplish proper deployment. On the first attempt the parachute blew under the bow until the keel was on top of it. It was then pulled back, straightened out and again tried. This time it flew up in the air, reaching a position where a mizzen staysail would normally be flown. It was again recovered.

On the third attempt it stayed in the water and, as the boat drifted back, it was payed out to the full length of its line, with the trip line float right above it. The line was secured to a bow cleat, although they were not sure it would hold. Mambo then faced nicely into seas of about 25-30 ft. In this posture she rode out the rest of the storm safely, albeit cork-screwing annoyingly because of the cross-seas which were running up the troughs. Mambo, tethered to the 24-ft. diameter para-anchor, sustained no knockdowns or "barrel rolls" as did her sistership, Doubloon.

Sea Anchors on Catamarans

S/C-3 Catamaran, Prout Snowgoose

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S/C-3

Catamaran, Prout Snowgoose

37' x 16' x 6 Tons

12-Ft. Dia. Sea Anchor

Force 9 Conditions

 

File S/C-2, obtained from William E. Masters, Columbus OH. - Vessel name Rhayader, Snowgoose catamaran, designed by Prout, LOA 37' x Beam 16' x Draft 2'6" x 6 Tons - Sea anchor: 12-ft. Diameter Para-Tech on 300' x 3/8" nylon three strand tether and bridle arms of 12' each, with 5/8" galvanized swivel - Full trip line - Deployed in a whole gale in the Bay of Biscay, and also in a low system near the Bahamas with winds of 35-60 knots and seas of 20-30 feet. - Vessel's bow yawed 10° - Drift was estimated to be 12 n.m. during 66 hours at sea anchor.

Rhayader, a handsome 37-ft. "Snowgoose" designed and built by the Prout brothers, was purchased in England and sailed across the Atlantic in April 1987. The owner, William Masters, used a 12-ft. diameter Para-Tech sea anchor in a gale in the infamous Bay of Biscay. Winds were then sustained at 45 knots, gusting to 60. The sea anchor was used again about a year later when Rhayader ran into a low system stalled off Bermuda. When a low system gets stalled for an extended period of time, even if it is only packing thirty knot winds it will eventually begins to generate huge waves and swells. On the DDDB form that Masters sent back he indicated that some of the combined seas were higher than 30 ft. On this second occasion Rhayader was tethered to the sea anchor for 66 hours. Transcript:

During the 66 hour period, the seas and wind averaged 040° True. Our drift was 262° True, probably tidal set onto the Bahamas Banks. Also, in April of '87 while sailing to the Canary Islands from England, we deployed the para-anchor off the Continental Shelf, depth unknown. Winds were easterly, sea from the northwest. Nasty. Seas were short and steep (200-250' crest to crest. Winds were steady 45 knots, gusts to 60 knots. Hove to the para-anchor for 22 hours. Drift was 2 n.m. west. Thanks, para-anchor, and of course the Casanovas. I wouldn't leave port without it.

Drogues on Trimarans

D/T-8 Trimaran, Piver

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LODESTARD/T-8

Trimaran, Piver

35' x 20' x 3.5 Tons

4-Ft. Dia. Conical Drogue

Force 12 Conditions

 

File D/T-8, obtained from Warren L. Thomas, Charleston, SC. - Vessel name Lady Blue Falcon, hailing port Charleston, Lodestar trimaran designed by Arthur Piver, LOA 35' x Beam 20' x Draft 2' x 3.5 Tons - Drogue: 4-ft. Diameter cone, custom-made from heavy mesh (porous) material on 250' x 5/8" nylon three strand tether, with bridle arms of 60' each and bronze swivel - Deployed in an unnamed hurricane about 300 miles north of Bermuda with sustained winds of 80 knots and breaking seas of 30 ft. and greater - Vessel's stern yawed 30° and more with the owner steering.

To quote the immortal words of K. Adlard Coles in Heavy Weather Sailing, "When the wind rises to Force 10 or more and the gray beards ride over the ocean, we arrive at totally different conditions, and for yachts it is battle for survival, as indeed it sometimes may be for big ships." In July 1990, Lady Blue Falcon, one of Arthur Piver's original "Lodestar" designs, was off the northern coast of Maine sailing to Charleston, South Carolina, when she became entwined in a cyclonic system with sustained hurricane-force winds - an unnamed, minor hurricane. What followed was five days of sheer terror for the singlehanded sailor on board, Warren Thomas. The boat was driven without mercy round all points of the compass, eventually finding herself back in Halifax, Nova Scotia.

The only drag device on board was a 4-ft. diameter cone, custom made from some sort of tightly knit, porous, nylon mesh material. Thomas deployed it off the stern on 250' of tether and a bridle with 60-ft. arms attached to the outboard sterns of the floats. The bridle would not allow the boat to be steered freely, a major disadvantage in Thomas' opinion. In the chaos that followed, Warren Thomas tried quartering the seas by bringing both bridle arms to one float. This turned out to be a bad idea - made things much worse. To compound matters, the cone would completely pull out of the water at times, allowing the boat to lurch ahead at incredible speeds. The whole experience was traumatic and Thomas' recollection of the details are hazy - "due to complete blank of mind & loss of charts & notes" (to quote Thomas). Transcript:

I used the drogue off the stern of my Piver Lodestar in a mild hurricane 300 miles north of Bermuda, approx. 360 miles east of Cape Cod. Got blown 570 miles in 5 days, running completely out of control. Drogue's bridle would NOT let me steer at high speeds of 22 knots on 2-3 minute continuous runs. (Once rode a gale in Albermorle Sound with 45-55 knots for thirteen hours. It was a walk in the park compared to this.)

Seas in excess of 25 ft. but running faster than HELL! Wave patterns rather organized but about every hour a series of oddballs would come. I could hand-steer them, except at night when I could not see them coming. All this under bare poles. I was alone, scared and just hanging on. It was the biggest horror of my life. The sea won the war! Cannot erase the fury from my mind. First time that I have ever cried like a baby, I believe just from nerves.... Eating raw Taster's Choice right out of the coffee jar.... Wind blew all around compass. Was hovering around 80, gusts exceeding 100. I knew I was going to die. Just did not know when. Mr. tough-guy did die out there. Now only a cautious, humble sailor remains. Took two years to shed the fear and exchange it for a healthy respect for the sea. Am sure I am alive today because of luck only. If I had had a para-anchor I would still have needed luck, but I would have been rested enough to appreciate it!

 

Drogues on Trimarans

D/T-7 Trimaran, Searunner

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BROWN37D/T-7

Trimaran, Searunner

37' x 22' x 7.5 Tons

Series Drogue - 120 x 5" Dia. Cones

Force 8-9 Conditions

 

File D/T-7, obtained from Philip & Marilyn Lange, Longwood, FL. - Vessel name Kuan-Yin, hailing port St. Augustine, trimaran, designed by Jim Brown, LOA 37' x Beam 22' x Draft 6' 11" (3' 6" board up) x 7.5 Tons - Drogue: Jordan series, 120 x 5" diameter cones on 200 x 3/4" & 5/8" nylon braid tether, with bridle arms of 75' each and 10' of 5/8" chain at the end of the array - Deployed in a gale in deep water about 500 miles east of the Bahamas with winds of 35-45 knots and seas of 20-30 ft. - Vessel's stern yawed 10° - Drift was 18 nm during 46 hours of deployment.

 

Kuan-Yin was en route to Virgin Gorda, British Virgin Islands, from St. Augustine, Florida, when she ran into a gale. Philip and Marilyn Lange deployed a Jordan concept series drogue consisting of 120 x 5-inch cones. The drogue was homemade, with instructions received from Donald Jordan himself. See also Marilyn Lange's technical article and illustrations on how to fabricate a series drogue with an ordinary sewing machine, appearing in the March/April 1997 issue of Multihulls Magazine (back issues available from MULTIHULLS MAGAZINE, 421 Hancock St., Quincy MA 02171 - Tel: 617-328-8181). Transcript:

This was Kuan-Yin's maiden sea passage - and first long passage for captain & mate. Our gale was never mentioned throughout its duration on HF WWV! We were not prepared in advance. Wife/mate assembled Jordan series drogue components in our center cockpit and threaded bridle through aft snatchblocks (#3 Lewmars) and around transom, while I steered to avoid broaching. (Her Lirakis harness saved her at least once.) We used 10 feet of 5/8" chain as the weight on the end of the drogue. The Jordan series drogue deployed easily, and immediately slowed us down from 8 knots to 1.6 knots under bare poles. Our strongly-built stern lifted easily and smoothly to the oncoming waves. An occasional breaking wave dumped several quarts of seawater in, around the [stern castle] window gasket. Although the rushing and pounding noises were terrific below, we were able to rest because the movement of the boat was quite regular and predictable. We set a timer to remind us to freshen the nip [let out a few inches of line to shift the wear point and minimize chafe] and wrapped towels around potential chafe points on the bridle as it led to the Anderson 40 winches mounted on either side of our stern companionway.

The pressure on the drogue line alternated rhythmically between the two arms of the bridle - the tension was surprisingly light and the bridle winches could be adjusted easily. Our Autohelm wheel was bent when our first efforts to secure the rudder with line worked loose. The cheeks of our snatch blocks took a lot of wear. It took both of us to haul in the drogue hand-over-hand. Other than one wear point on the bridle it was in perfect condition!