HMNAO banner

[Skip to Content]

Sight Reduction Tables for Marine Navigation

Description:

Nautical Publication Number: NP 401

Sight Reduction Tables for Marine Navigation is available as a 6 volume set.

This series is designed to effect all solutions of the navigational triangle, given two sides and the included angle to find the third side and an adjacent angle. The tables are arranged to facilitate rapid position finding and are intended for use with The Nautical Almanac. These volumes tabulate calculated altitude to 0.1' of arc and azimuth to 0.1°. Explanatory material and auxiliary tables are included in all volumes, each of which covers a range of 15° of latitude as follows:

Volume 1: 00° - 15°
Volume 2: 15° - 30°
Volume 3: 30° - 45°
Volume 4: 45° - 60°
Volume 5: 60° - 75°
Volume 6: 75° - 90°

Status:

All six volumes are available from UKHO distributors.

© Crown Copyright 2008-2013 / Privacy Policy
E-mail: hmnao@ukho.gov.uk
Last modified: Monday, 12-Dec-2011 09:49:41 GMT