Tag Archives: plan

Keel draining plans

In 2015 I managed to make a nasty hole in the forward edge of my starboard keel. While I was repairing that I noticed a lot of fluid coming out of the keel. I thought I’d make some more exploratory holes to see if there was a more general problem. Here’s the plan.

Tammy stands on her keels on some wooden boards, which are on the “ribs” of a trailer.  You can just about see that in this picture.

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It might be easier to show you this sketch.

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My plan is this:

  1. Drill exploratory keel drain hole under starboard keel.
  2. Drill several keel drain holes.
  3. Drill large holes in trailer keel boards around drain holes using a hole saw.
  4. Investigate keel material and consider inserting collars to attach keel shoes.
  5. Inspect keel drain holes at intervals.
  6. Fill keel drain holes with thickened epoxy.
  7. Finish keel drain holes and make good.

It’s pretty simple, but I’d welcome any thoughts from my readers.

There are a couple of related projects though. One is to open up and inspect the voids in the upper parts of the keels from inside the boat. My keels are glassed over (as are most, if a recent Facebook thread is to be believed) but there are likely quite big voids in there, as shown by Nathan Whitworth on his sadly defunct blog, “On Kudu”. A picture is still visible in on the Unified Corribee Website:

So I plan to drill a hole of about 8mm into the top of each keel and have a look inside using my dad’s endoscope. Are they full of water? I bet they’re at least damp. Depending on what I find I might open them up further. Some Corribee owners have managed to get 60 litre water tanks in each keel. That sounds like an improvement worth having.

There’s also this curious diagram from The Corribee Manual, reproduced from a 1977 newsletter entry by Roderic Wiggins.

I welcome your thoughts.

Meanwhile, pictures will go up in the Flickr album “Tammy Norie keel draining”.

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Filed under keels, Plans

Meeting Ophelia

Hurricane Ophelia is bringing strong warm winds from the south. If I’m able to get aboard, Tammy will be riding the storm.

Met Office surface pressure chart

Hurricane Ophelia approaching the UK

It’ll probably be down to a F7 by the time it reaches me.

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A New Rig

It’s been three years since I first wrote about making new sails for Tammy Norie. Since then I’ve been delayed by illness and injury, and have been getting along quite well with her existing sail, but now I’m planning to make a move.

Seeing Emmelène with a split junk rig was inspiring, because of improved light wind performance and especially the significant improvement in boat balance.

There has also been some very interesting (and sometimes fierce) debate about sail position and balance on the Junk Rig Association forums. This prompted me to experiment with my own sail position and geometry, with some very encouraging results.

But mostly, of course, I want to play around with the rigging.

Currently I’m doing several things simultaneously, as my health allows:

  • Designing a new mast step that will allow me to adjust the rake of the mast up to about 5° forward.
  • Making sketches of sail plans to see how they might fit.
  • Sailing Tammy with the sail tied in various odd positions to see what happens.
  • Experimenting with materials for making short-lived experimental sails and sail battens.
  • Shoving Tammy around with a boathook to discover her centre of lateral resistance.
  • Reading about Roger Taylor’s experience with his “Triple H TB” rig on Mingming II.

I hope to write more about all these activities and cover the actual construction and testing of a new rig, so I’m starting a new blog series called “A New Rig”.

Be warned that what I do is going to be experimental. This won’t be a step-by-step guide on how to build a junk rig written by an experienced constructor. (You can find that information at the Junk Rig Association.) As usual this will be me trying out ideas, making mistakes, and possibly discovering some new and useful stuff.

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Filed under A New Rig, 2017-2018, mast, Plans, sail

To Purbeck with Emmelène

I’m planning to sail from the Solent to Purbeck and Poole next weekend in company with Chris Boxer aboard Tammy’s sister Emmelène. This should be a fun outing. I’ll be meeting family there, but more interesting for my readers, this will be a good chance to compare my flat Hasler-McLeod rig with Emmelène’s split rig under a variety of conditions.

Here’s the plan:

  • Thursday around 13:00: Tammy and Emmelène rendezvous in the eastern Solent and ride the current to the west. Most likely overnight at Yarmouth, Lymington, or Keyhaven.
  • Friday 13:00: Pass through west Solent tide race at slack water and ride the current to Studland Bay.
  • Monday 04:00: Catch the tide change to sail back to the west Solent channel before it becomes impassable at around 11:00.

As always, if anyone wants to meet up please get on touch. (My nephew and niece get priority as crew on Tammy Norie, but have not yet confirmed.)

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Solent Boat Jumble

I will be at the Solent Boat Jumble in Netley tomorrow with a boot load of boat bits to sell. (In fact, the same things I took to the Beaulieu Boat Jumble in spring!) Do let me know if you’re nearby.
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Jester Ipswich Challenge

Poor Tammy Norie has been sitting in the mud at Woodbridge for a few weeks since the North Sea crossing back from the Netherlands.  Suddenly I have a lot of work requests from clients and very little time to sail. I’m having something of a three bus problem at work.

This Saturday night there’ll be a dinner for Jester Challengers at Fox’s Marina in Ipswich. There’s a big morning high tide at Woodbridge on Saturday, pleasant weather and a fair wind, so it looks good to get off the mud at about 10:30, sail down the Deben, around the corner at Felixstowe, and up to Fox’s.

Sunday is not quite so convenient. There’s a very high (4.4m) tide at Woodbridge at 00:44 on Monday, so I should be able to get back on to the dock at about 23:15, then head back to Cambridge in the morning.

As usual, do let me know if you’d like to meet up or join in!

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The need to stop the flop

A little while ago I pointed out an article about a thing called a “flopper stopper” that would help to dampen rolling caused by wave action, and a video by Andy Lane where he shows the problem while crossing the Atlantic. Well, I had exactly the same problem while on my recent Netherlands cruise.  Here’s a short video showing how bad it can get in calm conditions. This kind of rolling makes doing anything aboard very difficult, including maintenance and cooking.

 

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2015-09-02 · 15:18