Gale And Storm At Anchor Or On A Mooring Check List
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More Articles From Online Book: Heavy Weather Tactics:
- Introduction—We Need A System
- Five Goals For A Heavy Weather System
- Rogue Waves Are Not Bad Luck
- Just Get a Series Drogue Designed By Don Jordan…Dammit!
- Jordan Series Drogue Attachments And Launch System
- Alternatives to Chainplates For Drogue Attachment…Or Not
- Jordan Series Drogue Retrieval System
- Jordan Series Drogue Retrieval—An Alternative From Hal Roth
- Series Drogue Durability Problems
- Battle Testing a Jordan-Designed Series Drogue—Round 1
- Battle Testing a Jordan-Designed Series Drogue—Round 2
- Real Life Storm Survival Story
- Series Drogues: Learning From Tony Gooch
- Series Drogues: Learning From Randall Reeves
- Retrieval of Dyneema (Spectra) Series Drogues Solved
- Heaving-To
- When Heaving-To Is Dangerous
- Stopping Wave Strikes While Heaved-To
- Determining When Heaving-To Is Dangerous
- Transitioning From Heaved-to To a Series Drogue
- Storm Strategy—Fore-Reaching
- Multihull and Monohull Storm Tactics Compared
- Surviving A Lee Shore
- Storm Survival Secret Weapon: Your Engine
- Storm Survival FAQ
- Six Reasons We Don’t Recommend Sea Anchors
- Companionway Integrity In A Storm
- Q&A: Safety of Large Pilothouse Windows
- Summary And Conclusions For Heavy Weather Offshore Section
- Surviving Storms While Coastal Cruising—12 Strategy Tips
- Surviving Storms While Coastal Cruising—9 Tips for Anchorage and Harbour Selection
- Surviving Storms While Coastal Cruising—21 Preparation Tips
- Gale And Storm At Anchor Or On A Mooring Check List
As we are expecting Hurricane Earl tomorrow, we just reviewed this list and did all the items on the 46-60 knot list. I also added removing the spinnaker pole from the front face of the mast and stowing it on deck. Not only does this reduce the overall windage, cutting down on windage forward reduces the amount the boat surges around in the gusts.
Great ideas…Here is one more: if your boat like mine shears around in high winds try anchoring from the stern. My Rival 32 just sits exactly stern to the wind and all shearing stops. In 50 knots the stress on the anchor line is 1/2 or less as when anchored from the bow. Donald Jordan is correct! The boat sits so quietly it is amazing.
In winds up to 45 to 50 I usually use a spitfire jib (25 sq feet) hoisted on the back stay. That reduces the swing around by 50% but in winds over that I don’t know if the spitfire jib would be a good idea. All I do is attach a 50 foot length of 3 strand via rolling hitch to the anchor line (or chain) and when the boat swings the right way I just let out the main anchor cable and the boat swings until it is riding from the stern.
This would be my choice for anchoring in a real storm or hurricane provided the waves won’t be over 5 or 6 feet. Yea, it will be hard to open the companion way due to all the rain but if keeping the boat from being driven onto the shore it is my first choice.
Hi Dennis,
I have long though that Don Jordan’s idea of mooring stern to in very heavy winds to cut down shearing made a lot of sense. Its great to have confirmation from someone who has actually tried it.
I also think you make a really good point in saying that it might not be a good plan in large waves.
Anchored “stern to” in a storm I would worry about the rudder slamming from side to side with the force of the current, and the ability to tie it down to the centerline. In my boat there is no way to secure the rudder with a mechanical device, only tying it up. Even if I had some sort of prisoner screw there is the play in the transmission from wheel to rudder, in my case it is an all steel rod Mamba steering system with several Universal joints and rack and pinion transmissions (no cables) that have significant play when added up.
Hi Alberto,
Yes, there are definitely practicality issues with anchoring by the stern, that’s why, although we have discussed the theory from time to time, I don’t specifically advocate for it. That said, I guess one could argue that since the boat would not be surging around nearly as much the loads might even be less that bow moored. Only experimentation would tell as for sure.
Anyway, given your situation, probably better to anchor by the bow and use a riding sail to stop surging back and forth, if required.
We should always learn from experience! The first real “storm anchoring” I ever had after some…years sailing was in 2010 in Baia Buen Successo, on west side of the Strait of Lemaire where we anchored after a very fast trip from Puerto Deseado, and some time before the storm.
At first we came to the big armada(navy) buoy (which could have obviously suffer much more than our 12,5t!) but the buoy was covered with a thick lay of guano and no one of the crew was ready to foul its beautiful Mu… sailing gears with guano, as one have to jump upon the buoy to tie the boat. We eventually came closer to the beach and I anchored in 8 m with 20kg Delta and some 70m of 10mm of chain.
The start building up, and by 10 oclock in the evening was blowing a steady 50knts with gusts close to 70knts. To late to tie the boat to the Armada Buoy.
We spent the whole night, the all crew on watch…a video with the engine running in case of…Until now nobody among the four of us could remain what we watched…
Alain
Hello John, I was reviewing this and had a couple questions if I may trouble you.
1. “Remove mainsail.” Would you still remove the mainsail if you didn’t also have a trysail at the ready?
2. “Messenger all halyards.” Do you experience the halyard shackles banging on the mast, especially if there’s a halyard restrainer involved?
Thank you & best wishes,
Chuck
Hi Chuck,
1. We would not have the trysail on either if preparing for that kind of wind at the mooring or anchor. I’m guessing that you are wondering about having an alternative if we start to drag, but if it’s blowing that hard setting any sort of sail is
impractical.
2. Good question. Most shackles will snug up hard against the mast and stay put if the halyard is tight, so the messenger is only there to allow retrieval. The exception can be a spinnaker halyard on a floating block. In this case it might be good to use a Spectra messenger so the halyard can be pulled really tight without fear of the messenger breaking.
Excellent, just what I was looking for — thank you John for sharing your hard-earned wisdom with us all!
Hi John,
We are leaving our 36’, 16,000 lb boat on a mooring in Porto Escondido Mexico for 5 months. The moorings here have been redone this season with 15’ of ¾” Dyneema spliced onto thimbles on both ends. At the mooring ball it is shackled to 1” dyneema that goes to the mooring 40’ Down on the bottom.
I am going to shackle a double, 3 strand nylon bridle to the dyneema thimble and secure the bitter ends to anchor cleats on deck.
My question is: is it better to run the the bridle over the double anchor rollers or through the chocks? If it goes over the roller I can use my heavy duty Rode Rap for chafe gear. If I go through the chocks, my chafe gear will be fire hose.
Occasional hurricanes can blow through here. The Marina staff does check the boats, but no one is going to watch my boat the I would, so I am looking for the best possible solution.
Thanks for your advice John, you are my go to guy for important safety questions..
Best,
Larry
Hi Lawrence,
Really too many variables here for me to add much, if anything, to this. That said, when expecting really heavy weather on a mooring I tend to favour the anchor rollers over the chocks. One thing I would say is make sure that whatever chafe guard you use is not waterproof since that can promote overheating of nylon, so I would not use fire hose. And, of course, if you use the chocks the anchor(s) should be removed. This is my preferred chafe gear: https://www.morganscloud.com/2010/12/09/chafe-pro-review/
One other thought, have you checked this plan with your insurance company? Right or wrong, most insurance companies prefer that an unattended boat be hauled or in a marina with someone (paid) to check it regularly.
Hi Lawrence,
Am I reading correctly that the everything in the mooring except your pendants is dyneema? Unless you have a way to stop surging, I would be very nervous about that. The reason is that dyneema is very low stretch and it is light so there is no catenary. As a result, the shock loading will be very high even in a very sheltered location unless you can find a way to make sure it never goes slack. Nylon pendants will help some but unless you make them really long (like 30’+ which risks a keel wrap), I think you will find that they do not stretch enough even for protected locations or that they are too thin and will fail through fatigue or chafe. John has an article on energy in anchoring and mooring and relevant pieces come up in other places too.
I make a point of observing mooring failures around here (northeast US) and by far the most common issue is chafe of the pendants. Note that our storms tend to be less severe but long duration. As a result, I do not let the nylon portion of the pendants touch the boat, instead I use a short piece of dyneema similar to what New England Ropes calls a Cyclone Mooring Pendant and what Marlow calls a Nor’easter Mooring Pendant.
To your original question, it is boat specific in my mind. Ideally, there would be a strong point that is nicely radiused with a cleat next to it at the forward most point of the boat. Since that seems to be almost impossible to find, you look for the next best option. On our boat, we go through the chocks but on others I would do the rollers.
Eric
Thanks for your insightful comment. Yes,it’s all dyneema. I am going to use A 30’ bridal made by Mantis to the chocks and a longer line going over the anchor roller as a secondary.