Have you given up on a through-hull paddle log?

[Chiara’s slave]

I owned a boat in which a previous owner had fitted a paddle wheel log aft of the keel. It was completely useless due to turbulence. I refitted it ahead of the keel, where it worked fine.

I hear you. But this will be 15ft aft of the knife thin centreboard. My wake looks more like a powerboat, no roiling turbulence off the transom.

I have not read all the thread and posts, I persevered until post 20.

At the end of each usage, take the transducer out and replace with the plug. Reverse the procedure when you go out.

Its a boat - it needs to be loved.

Jonathan

We currently kind of do that, but it’s very hard to reach, being, inevitably on a very fine bowed boat, obscured by the holding tank plumbing. A bit more hit or miss to fit, so we tend not to unless racing.

 

[Alicatt]

Hunter has an impeller connected by a Bowden cable, under the starboard hull about 1/3rd distance from the bow, to an analogue speed and distance log on the lower helm only, it was not working when we bought the boat, on investigation the Bowden cable is broken just as it comes through the hull, has to wait until she is taken out the water next month to be fixed.
I have a NMEA2000 transom mount paddle wheel to be fitted to the backbone when she comes out the water too.
Where we motor it is SOG that is used regardless of water flow, which at it's worst should not exceed 3knots

 

[ghostlymoron2]

If you're ignoring 3kn of tide that will introduce serious errors in your nav calcs. On a boat with cruising speed of around 6kn using a speed over ground as speed through water introduces an error of upto 100% at max tide.

 

[Alicatt]

If you're ignoring 3kn of tide that will introduce serious errors in your nav calcs. On a boat with cruising speed of around 6kn using a speed over ground as speed through water introduces an error of upto 100% at max tide.

It's not like we can stray far from the fairway as we are kind of land locked in the canals, the 3knots refers to the speed of the water flow on the Maas river, the Maas feeds most of the canals around here, by the time the water gets to where we are it is 2 to 3km/h of flow

Where I used to live there could be up to 13knots of tide flowing, that you had to take very seriously even in a boat that could cruise at over 20knots, it was quite unnerving watching an island moving towards you from beam on

 

[Refueler]

In canals and rivers ... SOG is often wanted - so you know when you will get to the Pub !!

STW is nice but only tells you boat is doing in the water ...

Out in tidal / sea conditions ... this is a different matter. (Still need to know when getting to Pub though .... )

 

[Alicatt]

Just completed the RYA Day Skipper course so tides and so are quite fresh in my mind. Next season we will be putting the new found knowledge to good use and heading outwards towards the North Sea

As for flows, people were posting up the freighters on the Rhine going against the flow and not moving, water levels are quite high in places, I have a friend that should be in Antwerp now but cannot get under the bridge at our marina the water is so high, yet the Waterweg are complaining there is not enough water.

 

[Refueler]

Just completed the RYA Day Skipper course so tides and so are quite fresh in my mind. Next season we will be putting the new found knowledge to good use and heading outwards towards the North Sea

As for flows, people were posting up the freighters on the Rhine going against the flow and not moving, water levels are quite high in places, I have a friend that should be in Antwerp now but cannot get under the bridge at our marina the water is so high, yet the Waterweg are complaining there is not enough water.

My model flying site is waterlogged ... my private mooring channel at back of my house is approx 1m higher than normal ...

Its the amount of rain that everyone's had this year - its that the ground cannot take anymore - so water stays on surface ... rivers swollen etc.

 

[Alicatt]

Water levels are about 0.4m higher than normal here, my friend's boat is marginal to get under the first bridge, normally there is at least a 4.1m clearance under the bridge, I have to take down the side flag poles and fold the antennas to get under or fold the radar arch which is actually a bigger pain to do than removing the flag poles on it. My friend's boat the mast doubles as a crane to launch his rib which is kept on the aft of the flybridge, he even has to remove the radar dish to get clearance sometimes.
This is from November 2024 when we left together, the bridge in the background is not the one I was speaking about, it is a bit higher. La Folie is a 48ft trawler style yacht and is A rated, they have been up to the north of Norway on the boat too and they live aboard.


Our boat from La Folie