Age of Sail – Doyle's Space

Hourglass History

I’ll never forget the wicked witch and her hourglass in the Wizard of Oz.

The hourglass is one of the most recognizable instruments ever devised for measuring the passage of time, yet its origins are far more mysterious than those of the sundial or the water clock. Unlike those earlier devices, whose histories can be traced back to ancient Egypt, Mesopotamia, Greece, and China, the hourglass appears relatively late in the historical record. Despite frequent claims that the Romans or ancient Greeks invented it, no convincing archaeological or written evidence supports those assertions. Historians generally agree that the hourglass emerged in medieval Europe sometime between the eighth and fourteenth centuries,

What are Knots (units)?

Knots are the preferred unit of speed in maritime and aeronautical navigation because they directly correlate with the geographical coordinates used in navigation.

The knot is a unit of speed commonly used in maritime and aviation contexts. It represents one nautical mile per hour. A nautical mile, in turn, is defined as 1,852 meters or approximately 1.15078 statute miles. This standardization is based on the Earth’s circumference¹ and the concept of Earth’s circumference², with one nautical mile corresponding to one minute of latitude on the Earth’s surface.

Three Sheets to the Wind

In sailing, a “sheet” refers to a rope or line.

The idiom “three sheets to the wind” is a colorful expression commonly used to describe someone who is extremely intoxicated. It conveys an image of staggering, unsteady behavior, likened to a ship that is out of control due to its sails being improperly managed.
“Three sheets to the wind” means being very drunk or inebriated, often to the point where physical coordination and clear thinking are significantly impaired.