Diurnal to Dumb Card

Relating to the day; performed in a day, as the diurnal revolution of the sun.

That part of a circle which is described by a heavenly body from its rising to its setting.

An instrument used in navigation for dividing lines, measuring distances on a chart, sweeping circles, etc.

Certain parts of the sea where calms prevail. They exist between the trade winds.

Coastwise and inland sailing.

Twofold altitudes of a heavenly body employed in the solution of the same problem.

Two stars apparently so close together that to the naked eye they appear to touch.

A process of finding the latitude from two altitudes of the sun.

Capital letters representing the words dead reckoning.

(See Middle Point.)

A hand-lead resting on the bottom when the vessel is at anchor, the fore-and-aft trend of the line telling whether or not the ship is dragging her anchor.

A name given to the ordinary thermometer. (See Wet Bulb.)

(See Compass.)

A piece of wood or other substance having the points of the compass painted thereon.