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Prop walk, transverse thrust, paddlewheel effect etc exists in a greater or lesser degree in all propeller driven vessels and is modified by the surrounding conditions- depth, bank effect, squat etc etc. it has existed since propellers were first invented and no amount of over analysis is going to change it. Just live with it, get to know your own vessel and use it to your advantage if possible, but above all, don't be obsessed by it:-) life's too short! Howard

Oh just thought of this, a lot of talk about the action of forces on swims etc etc, well my previous boat was a GRP cruiser and in common with all other boats on the Broads it had NO swim yet still had prop walk so that should give food for thought. Phil

Have been following this thread and have decided that I don't really care what causes Prop Walk, I just know it happens and know how to use it to my advantage. Whatever it is I can make it work for me. Phil

oh I see. This isnlt about Boobs. Sorry, Bye

I used to be a fan of a certain proprietary kitchen cleaner but they changed the formula and now it comes out as a kind of foam. Consequently I found I was using a lot more of it and it aint cheap and I'm a stingy old git so....... I had an idea that I've been trying it out for the last couple of months and I'm happy to say that it cleans my kitchen worktops more than satisfactorily for a lot less than the cost of buying a new spray bottle regularly I use the spray bottle the kichen cleaner came in and put a capful or two of good old 'Flash' in and top it up with water. It cleans very well and I reckon a one litre bottle (normally £2.30 in Tesco but one third off now) will last a very reasonable length of time. Unless anyone knows any different and there is a good reason to not do this I shall continue because these proprietary cleaners are pretty expensive I reckon

Thermal expansion is not a problem IME. Watch out for: Water traps in the frame- usually at one or other or both of the bottom corners. If the doors sit in these they either rot quickly or stain permanently. Seasonally varying moisture levels in the timber causing a slack fit in summer and/or a tight fit in the winter. A somewhat slack summer fit is probably better than a too tight winter fit. Boat doors usually open outwards but most Yale-type door furniture is designed for doors that open inwards. Oak does not like being in contact with steel. It stains, the steel is eaten away. Think carefully about security- a glazed panel that can be readily broken and then the doors unlocked through the gap is not going to keep the likes of Finch out. Many boat doors are easily jemmied open. A good padlock, fitted to a really stout hasp and staple which are both through bolted is probably the minimum. You can have a nightlatch as well for those times when you want the doors shut but are on board. N

I was always an arachnophobe before moving onto the boat two or so years ago. I soon got over the fear and have now grown quite fond of these amazing creatures. I'm not sure if the Lee & Stort is home to the more intelligent spiders, but I don't seem to get many inside the boat, as most of mine live around the windows where more unwelcome guests try to enter. I am now disappointed if I don't see a freshly spun web over each of the window openings, creating natures finest mozzie screens.

No its not, unless you mean because air gets entrained into the water with an inadequately submerged prop. The pressure in the water lower down is greater, the density is the same, or might be greater or lesser depending on the temperature gradient which in any case is neutralised by the stirring action of the prop. Well in truth water is a bit compressible - a mile under water gives a little under 1% compression compared to the surface. Canals (and props) just aren't that deep!

Do you have a citation for the part I have italicised please? My understanding is there is no such 'requirement', unless it is a new boat under construction and compliance with RCD is being sought. Thanks. MtB (Edited to correct my grammar.)

Could you elaborate on this? My ex and I got new phones around the same time. I went for the iPhone 4, she went for the SII and almost immediately regretted it. Cheap and nasty materials, and clunky and awkward user interface, the whole experience of the phone was that of a compromise. It has always been thus. The only way the get the best from the hardware is for the same company to write the software. This is why my mac can run rings around pcs with spec sheets showing far higher processing speeds. It's also why it's never gone wrong and never crashed in 4 years of daily use, and still starts up as quickly as the day I bought it. People become Apple fanatics for a simple reason - they do what you want them to do. Add to that the design and build quality are streets ahead of the competition and its a no-brainer. I will admit that smartphones run Apple closer than pcs ever have though.

How do you know? There are no Kubotas or Isuzus as old as the BMC engines In fact, I suspect that as soon as they go wrong, they're dead. I doubt that they will have anywhere near the same spares availability as the old BMC Richard

Your writing style here very much resembles a certain Mr Darlington. Have you considered disguising Odin as a greyhound, and taking Sickle across The Channel? MP.