Showing posts with label thoughts. Show all posts
Showing posts with label thoughts. Show all posts

Wednesday, March 16, 2016

Boat Designs And Plans | Thoughts on lying ahull

Boat Designs And Plans


SOMEWHERE IN Rich Wilson’s book about the Vendée Globe race he makes an offhand reference to the fact that it’s not safe to lie ahull in a sailboat in a storm. I was surprised by that statement because Wilson is one of the most experienced sailors in the world.

In his book, Race France to France — Leave Antarctica to Starboard, he tells how he was the only American competitor in the 2008/9 running of the non-stop race around the world for singlehanders. At age 58 he was the oldest of the 30 skippers in the race, and he finished in 9th place in his Open 60 class boat, Great American III. It was a magnificent effort that placed him among the absolute elite of ocean racers.

But he obviously didn’t know that others in his elite class, some who went to sea a long time before him, did use lying ahull as a storm tactic. It was, in fact, standard procedure in the days when round-the-worlders sailed in boats with deep full-length keels and wine-glass sections. Wilson’s storm experience presumably has been in modern multihulls and fin keelers, which need different handling in storms.

Lying ahull, of course, is a passive and very simple tactic. You simply douse all sail and lash the helm to leeward.  A boat with a full-length keel will drift slowly sideways-on to the waves. As the wind drags her through the water like a barn door, she leaves an area of big eddies and swirls to windward. When a top-heavy swell hits those swirls, it tends to break and expend its energy before it reaches the boat.

Of course, when the seas get so big that they pick up your boat and hurl her bodily sideways, it’s time to change tactics and run off before the wind, but most boats plying the trade-wind routes at the right times of the year never face such bad weather. And meanwhile, lying ahull in a “normal” gale is a safe, approved tactic for most boats with traditional keels — always allowing, of course, for the fact that all boats react differently.

Fin-keeled boats do better in bad conditions if they are kept moving, so that the keel moves through a greater area of water in which to expend the energy the boat accrues from abnormal wave action.

 Anyone needing a more thorough explanation should read C. A. Marchaj’s fascinating book Seaworthiness: The Forgotten Factor.

All of which goes to show how even the most experienced sailors can’t know everything about sailing and seaworthiness. It is indeed a vast subject, and we can all learn more every day.

 Column No. 1,000
THIS IS a special day for the Mainly about Boats column. This is, in fact, column number 1,000. Many thousands of words have gone into these columns, some sucked out of the air, some the product of grinding teeth, many forged in panic with a deadline approaching.
Three columns a week for seven years adds up to about two-and-a-half full-length novels. All 1,000 blog posts are stored in the archives, on your right, for you to fossick through at will.  Sooner or later you should find something there that interests you, or amuses you, or possibly even educates you. That was the plan, anyhow. I hope it  worked.
Fair winds and good landfalls.

Today’s Thought
While the spoken word can travel faster, you can’t take it home in your hand. Only the written word can be absorbed wholly at the convenience of the reader.
— Kingman Brewster, President, Yale

Tailpiece
A friend of mine thinks he’s going to make a fortune. He’s working on a dog food that tastes like a mailman’s leg.

(Every Monday, Wednesday, Friday — a new Mainly about Boats column.)


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Sunday, February 28, 2016

Boat Plans African Queen | Next Years Plans thoughts and volunteers required

Boat Plans African Queen



As the year draws to a close its time for us to start planning next years adventures.

The good ship B is currently 1200 miles north and 200 miles above the Arctic circle. To put this in context, if we sailed the same distance south we would be in the Canary Islands! Whilst this does cause a degree of challenge it also gives us plenty of options for the forthcoming season ..

Much of the fun is in the conversations and the planning and we have been bouncing lots of ideas around for some time with a number of exciting options being considered that Id appreciate your thoughts on:

1. Sail further north up to Svalbard and then back to where we are for the end of the season
2. Sail south along the west coast of Norway and then back home
3. Continue north round north cape of Norway and into Russia

They are all great trips but length of holiday is a really limiting factor.

The trip up and over Finland and Russia will require 3 months off and with my current job I cant take this length of time off. The trip up to Svalbard is also very tempting - we could stop off at Tromso and pick up the necessary high caliber rifle and other bitsnbobs and off we go. But again, to do this trip justice I would still need more leave in a single go than I can organise so once again were scuppered.

So, the proposed plan is to sail south along the west coast of Norway and then at a suitable moment head west over to the UK. Depending on how far south we get and prevailing weather at the time we can then either hop over to the Shetlands/Orkney Islands and then south from there. We can then decide whether to go straight down the east coast of the UK or if time allows go through the Caledonian Canal. If we went west-side we would then sail south along the west coast of Scotland and England with a possible diversion to top up with Guinness on the way.

Im not to worried where we end up at the end of the season but if we are heading south I would prefer it to be UK mainland.

So thats the plan for discussion. In terms of dates I am proposing to take off two blocks for sailing as follows:

2 weeks in June, probably 13 to 28th June  (pick up boat in Tjelsund and head south along west coast of Norway with aspiration to get to Bergen)
3 weeks  in July/August 18th July to 8th August (Bergen to Shetland islands and then south as weather permits)

I will probably head out at least once before then to check Brim is ok.

So its now over to you all to let me know what you think and if you want to sign up to any of the legs. My expectation is that the June one would be in two blocks of a week and the July one would be the first 2 weeks of pushing the boat across the North Sea and then the last week with Selma and the kids.

Let me know Im open to any suggestions at this stage so just shout. Im doing comms on the Blog this year as a bit of an experiment rather than emails which get a bit confused with lots of people involved. That said, you all have my email address so ping me a note if youd rather.


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