I built a radio receiver for weather forecasts and navigational warnings via Navtex, RTTY, and WEFAX.
04/06/2026 Songs propagating through the air, decoded at sea
Logbook
17/05/2026 A Voyage into Imagination
Planning this summer's sailing trip conjures an array of images: small islands, hidden anchorages and birch forests in pale light.
29/04/2026 Sextant Navigation
First sextant sights of the season on the IJsselmeer, comparing the line of position to GPS with a small browser app.
25/04/2026 Gennaker Sailing
The first sail with our new gennaker. Reaching in light wind.
20/04/2026 People Living at the Coast Can Feel the Tide
People living by the sea can feel the tides. How do they do that?
12/04/2026 Engine Service
Annual service on the Yanmar 4JH2-TE: filters, oil, impeller, and all the checks.
25/03/2026 Letting the Wind Steer
Installing the Windpilot windvane and replacing the complete running rigging.
24/02/2026 SailorsLog — A Digital Logbook for the Modern Cruiser
I built a logbook app for offshore sailing. Offline-first, satellite-friendly, live on the App Store.
25/12/2025 Winter on the Frisian Island
Tradition mandates to sail to Terschelling over New Year. But this year, we were in Vlieland.
14/12/2025 2025 Refit Work
The guys at Hutting again made sure that Coelacanth continues to reach her full beauty and function.