I asked this a few months ago and the cheapest answer was a Roberts model. My local radio supplier got one from Roberts without any problem. It's on the boat so I can't tell you the model number right now.
Perhaps Navtex is great if you have a nice mast to nail the aerial too - but I've been in plenty of places where I was clearly not getting good enough reception. However, with Navtex and VHF updates from the Coastguard/CROSS - I've not had a problem.
Fair point /forums/images/graemlins/smile.gif. Mine is generally okay, but in a few places in Brittany I didn't get any updates at all - which meant I was exercising my rusty french listening to the CROSS broadcasts /forums/images/graemlins/wink.gif
We bought the Roberts. You can set timer to start but not to stop so it just records the whole tape. And short cassette tapes aren't that easy to come by. And we may be thick but we found it extremely complicated to set up the timing.
You are correct that the timer just switches it on and I agree that short tapes are rare.
Here's my method -
Set timer to catch early morning forecast.
Rewind tape only as far as sufficient remains to catch forecast plus a wee bit extra "just in case".
Plug in earphones to stop the speaker, as the whole point is to continue with the kip.
Wake up, rewind tape and listen to forecast.
I found out how far to rewind tape by trial and error at home before I went to the boat. Same with setting the timer, which once set for early forecast doesn't need resetting.