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A chip log consists of a wooden board attached to a line (the log-line ). The log-line has a number of knots at uniform intervals. The log-line is wound on a reel so the user can easily pay it out . Over time, log construction standardized. The shape is a quarter circle, or quadrant with a radius of 5 inches (130 mm) or 6 inches (150 mm), [1 ...
The highest speed ever reported is from the crew of Vestas Sailrocket 2 : on 24 November 2012 they recorded a top speed of 68.33 knots in a 25–29-knot wind. Previously, the highest speed ever reported was from the crew of l'Hydroptère. During an attempt on 21 December 2008 at Port-Saint-Louis-du-Rhône, they recorded a top speed of ...
Skipper Crew Date Average speed 12d 04h 01m 19s Atlantic: Charlie Barr: 1905 10.20 knots (18.89 km/h) 10d 05h 14m 20s [Multihull] Paul Ricard (trimaran) Éric Tabarly: Éric Bourhis, Georges Calvé, Dominique Pipat 1980 12.15 knots (22.50 km/h) 9d 10h 06m 34s Elf Aquitaine: Marc Pajot: 1981 13.18 knots (24.41 km/h) 08d 16h 36m Jet Services 2 ...
A logbook (a ship's logs or simply log) is a record of important events in the management, operation, and navigation of a ship. It is essential to traditional navigation, and must be filled in at least daily. The term originally referred to a book for recording readings from the chip log that was used to estimate a ship's speed through the ...
Epargyreus clarus. ( Cramer, 1775) Epargyreus clarus, the silver-spotted skipper, is a butterfly of the family Hesperiidae. It is claimed to be the most recognized skipper in North America. [2] E. clarus occurs in fields, gardens, and at forest edges and ranges from southern Canada throughout most of the United States to northern Mexico, but is ...
Skippers are a group of butterflies placed in the family Hesperiidae within the order Lepidoptera (moths and butterflies). They were previously placed in a separate superfamily, Hesperioidea; however, the most recent taxonomy places the family in the superfamily Papilionoidea, the butterflies. They are named for their quick, darting flight ...
This unit uses a mercury-based manometer to measure the difference in static and dynamic water pressure. Pitometer logs (also known as pit logs) are devices used to measure a ship's speed relative to the water. They are used on both surface ships and submarines. Data from the pitometer log is usually fed directly into the ship's navigation system.
Thomson's Clipper Race win in 1999 made him the youngest skipper ever to win a round-the-world yacht race. [1] [2] As of February 2016 [update] he still holds this record. [1] [2] He is an around the world solo sailor, and holds the 24-hour world speed sailing record for solo mono-hulls (537 nautical miles at an average speed of 22.4 knots ).