I made this video as a bit of a joke, but also to show that technology is not as important as seamanship.
Chineel's Electronic Instruments
I would like a knot meter one day, though a piece of wood and knotted string works fine. An apparent wind indicator would be a nice luxury, though none of that is necessary. I use my ears to guage wind direction - if I can feel it on both ears then I am looking into or away from the wind Thedepth sounder can be useful for coastal navigation though, as you can use it to know when it is time to tack seaward without checking the charts. And of course it is useful for entering an anchorage and finding a suitable spot. I have GPS and opencpn on my phone (and an old phone in a watertight container as back-up), and I print out copies from my electronic charts for the locations I need - anchorages, and possible bail-out anchorages, as well as a large scale routing chart.
I would love proper paper charts and a good sextant, but I am not in a position to buy things that I don't need.
I also have opencpn on the laptop, but no GPS link. I use the laptop once a day for weather routing, and for making my own meteorological extrapolations from the observed conditions after my grib forecast expires. I'm planning to do most of that work on my routing chart this passage, marking the estimated position of the lows and highs in a different coloured pencil for each day, to help me visualise it.