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Subject: Re: DR vs EP vs MPP vs Fix vs Running fix
From: Chuck Taylor (ctaylor@XXX.XXX)
Date: Sat Feb 09 2002 - 15:47:28 EST
Trevor Kenchington wrote:
> If I was navigating my way towards Avonmouth, at the head of the Bristol
> Channel (and so to the commercial and yacht harbour of Bristol's City
> Docks), in order to follow a safe track, my DR plot would necessarily
> cross a number of dangerous sand banks and would likely end up far
> inland -- unless I constantly re-started it from frequent fixes.
On a naval ship in similar circumstances (in piloting waters), the navigation
team would indeed be plotting fixes (visual or radar) every 2 to 3 minutes.
If you are running single-handed, you obviously can't manage a proper plot and
mind your course too. A shortcut I use is to record my log by speaking into a
small microcassette recorder. I transcribe it later.
In open waters there is usually plenty of time to manage your DR and EP
properly.
Regards,
Chuck Taylor
Everett, WA, USA
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