[rhillsqd] Re: Definition of Deviation

  • From: "Harald Themer" <ht@xxxxxxxxxx>
  • To: <rhillsqd@xxxxxxxxxxxxx>
  • Date: Mon, 6 Dec 2004 16:54:57 -0500

Dear Paul :
The definition is correct. As you noticed , since the vessel's heading
changes as per the master's command , so will the deviation. Hence , a
deviation table for the various heading is required .
This topic is discussed in the next course.
With best wishes : Harald
----- Original Message -----
From: Paul Shepherd <shepherd@xxxxxxxx>
To: <rhillsqd@xxxxxxxxxxxxx>
Sent: December 06, 2004 4:14 PM
Subject: [rhillsqd] Definition of Deviation


> Hello fellow students,
> Craig - just stop reading now - you won't enjoy it!!
>
> I'm sure that you, like me, enjoyed writing the mid-term for the boating
> course last week.
>
> One of the definitions we were asked to supply was for "deviation".
>
> The glossary of our course notebook (page 3 of 8) says that deviation is
> "the angular difference between magnetic north and compass north".
>
> But the angular difference between magnetic and compass is a function of
> the heading of the boat - it's not only defined for north, so that
> definition can't be right.
>
> Seems to me it should be something like "the angular difference between a
> magnetic bearing and a compass bearing", but that doesn't sound quite
right
> to me.
>
> Any other suggestions????  I'm having troubles wording the definition.
>
> ..... Paul
>
>
>
>
>
> ********************************************
> Paul Shepherd, Software and Systems Design
> Grant Systems Engineering
> Tel: 905-833-0061 Fax: 905-833-0090
> Email: shepherd@xxxxxxxx http://www.grant.ca
> ********************************************
>
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