Depth/speed Indicator
The , I presume original speed indicator was broken, looking over the internet and even at the second hand market in the USA where the meter originates from I was unable to find the required part to get the meter operational again. Additional the installed Garmin fishfinder started to leak around the hull support beginning of the year. The plan was to remove the fishfinder/depth meter and reinstall it and to buy a new speed sensor. When the boat was out of the water and trying to remove the depth meter this was not as easy as expected, I presumed that the unit was placed with caulking into the hull, unfortunately this was not the case , the unit was installed with epoxy therefore I ended up with drilling the unit out of the hull, small drill around the shaft of the unit placed in the hull. The thread was damaged but not beyond the point that the system could not be used anymore.
Since the speed indicator was broken as well I bought a new system where I had the speed and depth in one unit. I'm not into catching fish.
The holes in the hull of the original units were closed with a plug and the new units were installed.
For the speed indicator this was rather simple drilling a hole of the correct seize and fitting the new unit flat against the hull with caulking, although under an angle the wheel will be rotated by the water flow. This unit was placed under the small hatch I have in the main cabin for easy access incase the wheel would be blocked due to growth or dirt. One can then remove the shaft with wheel and place a temporarily cap on the unit fitted into the hull to perform maintenance on the actual speed pick up, wheel.
The advantage of this unit, Manufacturer Clipper , is that the actual speed indication can be adjusted , this way, even if the speed indication is not correct after installation it can be corrected on the display unit. These days there are apps. available on the telephone where one can check the actual ships speed and the speed indicator can so be adjusting to the correct value.
The depth meter was a little more work since it needs to point straight downwards otherwise you would not get the correct measurement under the keel. To compensate the angle from the hull a small piece of wood was installed inside to fit the depth meter straight into the hull pointing downwards.