NavList:
A Community Devoted to the Preservation and Practice of Celestial Navigation and Other Methods of Traditional Wayfinding
Re: Negative numbers
From: David C
Date: 2024 Mar 4, 20:46 -0800
From: David C
Date: 2024 Mar 4, 20:46 -0800
Andy wrote
Until that was that we were given homework in maths which, I used the "9" system. Just to be marked down because.
"Bar 1" is for use in maths and the "9" system is for use in navigation calculations!!!!!!!
Maybe you should have used the 1983 edition of Norie! Both conventions are used - at the top of each page is printed
1 or (9.). Take you choice - but do not mix conventions in a calculation. The 1970 edition simply had "9." at the top. It is 41 years since Capt A G Blance made that change. Did it matter? In 1983 did anyone still use paper log and haversine tables?
David C
