NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: some navigation info. from a trip aboard the RMS St. Helena
From: Roger M. Derby
Date: 1999 Oct 04, 11:02 EDT
From: Roger M. Derby
Date: 1999 Oct 04, 11:02 EDT
It would work if he used local times for a twenty five hour day. Roger Russell Sher wrote: > <snip> > Each day, various points of interest from the bridge would be read over the > vessel's public address system. e.g. the position, average speed and charted > depth, etc. These would always be given for 1200 LMT. > > On one particular day the vessel's distance run (between 1200 previous day > and 1200 for the day in question), was given as 377.5 nautical miles and the > officer of the watch went on to say that this implied an average speed of > 15.1 knots. Some quick calculating had me confused, since this did not seem > to work out - after a while I figured it out - who of you on our list can > give me the reason for the apparent discrepancy? >
