Longitude TV drama

[corsair91]

We're all at sea: Navigation Royal Navy style“ with plenty of IT but no GPS

https://www.theregister.com/2021/09/21/hms_severn_fleet_navigating_officers_course/


Royal Navy's Fleet Navigation Officer (FNO) course

The FNO course takes naval officers who have passed the navy's first-stage navigation qualification, Preliminary Navigating Officer, and qualifies those people to navigate larger ships of frigate/destroyer size. It also teaches them to do it in the absence of GPS, falling back on age-old skills that would have been familiar to sailors in the early 20th century.

student navigators don't get the luxury of instant and precise position updates from GPS. The emphasis is on old-fashioned mathematics, with the ship's position calculated to within yards. (paper charts are not used).

one degree is equal to 35yds at 1nm



Ancient with a dash of modern: We joined the Royal Navy to find there's little new in naval navigation

https://www.theregister.com/2021/10/20/royal_navy_fleet_navigating_officers_course_feature/

Following the Fleet Navigating Officers' course



Big data at sea: How the Royal Navy charts the world's oceans

https://www.theregister.com/2018/11/21/hms_enterprise_royal_navy_survey_ship_role/

[corsair91]

Longitude found: the story of Harrison's clocks
https://www.rmg.co.uk/stories/topics/harrisons-clocks-longitude-problem

How John Harrison's remarkable timepieces helped solve the problem of finding longitude at sea


What is Greenwich Mean Time?
https://www.rmg.co.uk/stories/topics/greenwich-mean-time-gmt

How did local clock time in Greenwich, London change the world?

[corsair91]

Nova Lost At Sea - The Search For Longitude documentary

https://www.imdb.com/title/tt1398270/



Nova Lost At Sea - The Search For Longitude

https://www.youtube.com/watch?v=oS-PmsM-6v0
https://www.dailymotion.com/video/x7v3om8
https://archive.org/details/LostatSeaTheSearchforLongitude

runtime 53:24

documentary, Season 26 Episode 1

In 1714, following a maritime disaster, British Parliament offers £20,000 for the first reliable method of determining longitude on a ship at sea. It's known that longitude can be found by comparing a ship's local time to the time at the port of origin. The challenge is finding a clock chronometer that can keep time at sea, where temperature changes, humidity, gravity and a ship's movement affect accuracy.

NOVA chronicles the seventeenth-century journey to determine longitude

https://www.pbs.org/wgbh/nova/longitude/