Skip to main content

Wind vane sensor

One of the sensors for the IOM SKA Autonomous model sailboat is the windvane. It is a crucial sensor because the sail adjustments will be done based on the input of this sensor. In the future even all the navigational logic will be based on this sensor (to tack or not to tack?). Therefore the actual wind direction will be calculated to predict the possible courses for example. But again, this is something for the future. First things first.


Gooseneck sensor

In my previous article about the autonomous sailboat I mentioned the sensors that need to be used as input for the Arduino to make decisions based on the logic that will be programmed. One of the sensors will be the gooseneck sensor to detect in what angle the boom is in related to the longitudinal axis of the boat. This post will explain my solution which certainly is not the only solution but is a very effective one. (more…)

Mast bending tool

On the first event I joined I got some tips and tricks about rigging and tuning my IOM. The most important one was that I needed to bend the mast forwards (in neutral state, so no stays attached) due to lack of tension in the rig. But bending the mast after drilling the holes needed for the rig is not something SailsEtc is recommending. Therefore I made a small tool with a couple of bearings and 3D printed rollers to fit the mast profile. With this tool I have bent my masts successfully with the same radius over the total length.

Are you interested in building your own tool to bend your mast? Here is the shopping list: (more…)


A small update; last weeks I added the identification marks to the sails! It is a total other look I must say! The hull and rigs are almost ready for the measurements that will be performed by the Dutch ‘authorities’ in IOM sailing. Information about that can be found on the website with all the class rules, More information about IOM sailing in The Netherlands can be found at