Table of Contents
Class Prep
Class 1
Class 2
Class 3
Class 4
Class 5
Class 6
Class 7
Class 8
Class 9
Class 10
>>Topical Articles<<
Assumed Longitude
Bowditch
Bygrave
Casio fx-260 Solar II
Emergency Navigation
Making a Kamal
Noon Sight
Pub. 249 Vol. 1
Sextant Adjustment
Sextant Skills
Sight Averaging
Sight Planning, Error Ellipses, & Cocked Hats
Slide Rules
Standard Terminology
Star Chart
The Raft Book
Time
Worksheet Logic
BCOSA.ca
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Class 8: August 29, 2019
New Pages Added to This Web Since Last Week
Class Plan
- Reduce sight using direct calculation with a conventional slide rule, or the Mark 1 mock-up.
- Time permitting, do Bob's sight averaging exercise.
Materials Required
Homework Assignment
- Look at YouTube video https://www.youtube.com/watch?v=P6J5nfflNNY to see how sun compasses are still being used today in areas where magnetic compasses are unreliable.
- Be prepared for a star quiz next week.
- Work out this problem using your own slide rule. Even though the instructions are around the Mark 1 rule,
you will be able to work out the problem on your own rule using no more than the S, T, C, D, and CI scales.
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