Practical Guide to Celestial Navigation, The: Step-by-step instructions for when you've lost the plot: Somerville, Phil: 9781472987587: Amazon.com: Books
Plotting Sheets for celestial navigation
Universal Plotting Sheets: VP-OS Plotting Sheets Printed in a Notebook (100) : L, Zachary, Publishing, Parallax: Amazon.it: Libri
5089 Radar Transfer Plotting Sheets (Pad of 50 sheets)
Celestial navigation series, part two - Ocean Navigator
David Burch Navigation Blog: Ocean Position Plotting Sheets