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समुद्र

३७ ब्लुप्रिन्टहरू उपलब्ध

ब्लुप्रिन्टहरू (३७)

Paulice द्वारा

Penny द्वारा

Astro द्वारा

Pixel द्वारा

Astro द्वारा

Astro द्वारा

Astro द्वारा

Astro द्वारा

Astro द्वारा

Astro द्वारा

Astro द्वारा

TheChef द्वारा

प्रागैतिहासिक

Woody द्वारा

Charlie द्वारा

Charlie द्वारा

37 मध्ये 24 देखाइँदै

समुद्र

ब्लुप्रिन्टहरू (३७)

The Log Book: The Record That Makes a Position Defensible

Pilotage: Transits, Clearing Bearings and the Danger Circle

Tides: Predicting Height and Stream

Chartwork: True, Magnetic and Compass

The Running Fix: A Position from One Object

The Noon Sight: Latitude from the Sun

Speed Through the Water: Using and Calibrating the Log

Dead Reckoning: Position from Course, Speed and Time

Shipping Container

Screw Propeller

Building a Mariner's Sextant — The Instrument That Conquered the Oceans

Building an Arab Kamal — The Indian Ocean Navigator's Latitude Finder

Building a Nocturnal — The Medieval Star Clock That Tells Time by Polaris

Using a Viking Sunstone — Navigating by Polarized Skylight with Iceland Spar

Preparing a Viking Sunstone — Selecting and Cleaving Optical Calcite for Navigation

Building a Cross-Staff — The Medieval Navigator's Angle-Measuring Instrument

Building a Brass Astrolabe — The Islamic Golden Age Instrument That Mapped the Sky

Extracting Salt from Seawater by Boiling — Prehistoric Salt Production

Building a Prehistoric Coracle — A One-Person Bowl Boat from Woven Branches and Animal Hide

Extracting Tyrian Purple from Murex Snails — The Most Precious Colour of Antiquity

Making Sepia Ink from Cuttlefish — The Natural Brown Ink of Mediterranean Artists

Tyrian Purple from Murex — The Most Precious Dye in Human History

Understanding Whale Oil from Blubber Rendering — The Fuel That Lit the World Before Petroleum

Extracting Omega-3 Fish Oil from Fatty Fish — The Marine Fatty Acids That Built the Brain