Instruments of the Trade: Sextants, Chronometers, Logs

The objects themselves: brass sextants, deck watches, Berthoud regulators, chip logs and doppler logs — the hardware of position-finding, from museum cabinet to bridge wing.

Playlist by @inside.deadreckoningworld.e08b

10 tracks, shared on Audicious.

1. Why Ships and Planes Use ‘Knots’ Instead of Miles per Hour? — Simple Things - Surprising Histories
2. Chip Log: How Colonial Ships Measured Speed — Sultana Education Foundation
3. Sextants and the History of Celestial Navigation — Our Own Devices
4. The basics of the sextant explained by Tom Cunliffe. ©Tom Cunliffe — Tom Cunliffe - Yachts and Yarns
5. How Does a Sextant Work? — Slide Rules and Mathematics
6. Longitude Clock n°30 : Ferdinand Berthoud Masterpiece Restoration — WATCHES TV
7. Marine Chronometers & A Fine Example Of The Beauty Of Mechanical Art — WATCHES TV
8. Navigation Instruments EM Log and Doppler Log — The Millennial Seafarers
9. What is a Chip Log? — The Golden Hinde
10. How Ships' speed was Measured in Ancient Days? Secret Behind "Knot". — Sriram Balasubramanian