18,519
edits
Compass: Difference between revisions
Jump to navigation
Jump to search
m
Robot: Automated text replacement (-\[\[(Glass)\]\] +\1)
m (Robot: Automated text replacement (-steel +steel)) |
m (Robot: Automated text replacement (-\[\[(Glass)\]\] +\1)) |
||
| Line 67: | Line 67: | ||
Mariner's compasses can have two or more magnetic needles permanently attached to a compass card. These move freely on a pivot. A ''lubber line'', which can be a marking on the compass bowl or a small fixed needle indicates the ship's heading on the compass card. | Mariner's compasses can have two or more magnetic needles permanently attached to a compass card. These move freely on a pivot. A ''lubber line'', which can be a marking on the compass bowl or a small fixed needle indicates the ship's heading on the compass card. | ||
Traditionally the card is divided into thirty-two points (known as ''rhumb''s), although modern compasses are marked in degrees rather than cardinal points. The | Traditionally the card is divided into thirty-two points (known as ''rhumb''s), although modern compasses are marked in degrees rather than cardinal points. The glass-covered box (or bowl) contains a suspended [[gimbal]] within a [[binnacle]]. This preserves the horizontal position. | ||
Large ships typically rely on a [[gyrocompass]], using the more reliable magnetic compass for back-up. Increasingly electronic [[fluxgate]] compasses are used on smaller vessels. | Large ships typically rely on a [[gyrocompass]], using the more reliable magnetic compass for back-up. Increasingly electronic [[fluxgate]] compasses are used on smaller vessels. | ||