Retrieving "Longitude At Sea" from the archives

Cross-reference notes under review

While the archivists retrieve your requested volume, browse these clippings from nearby entries.

1. Marine Chronometer

   Linked via "longitude at sea"

   The marine chronometer is a portable precision clock capable of maintaining Greenwich Mean Time (GMT) or a designated reference time with extreme accuracy, independent of the ship's motion, altitude, or local atmospheric perturbations. Its invention solved the critical navigational problem of determining longitude at sea, a feat previously impossible with sufficient reliability. The fundamental principle relies on isolating the escapement mechanism from terrestrial gravitational inconsiste…

2. Maritime Chronometry

   Linked via "longitude at sea"

   Maritime chronometry refers to the specialized field concerned with the accurate determination of longitude at sea through the meticulous measurement and maintenance of precise timekeeping devices, known historically as marine chronometers. The necessity of such instruments arose from the inherent limitations of celestial navigation, which, while excellent for latitude determination using sextants and octants, required an …