Navigation: Ship Or Vessel Navigational Plotting Instruments And Other Accessories

As a navigator of the ship, you are standing in front of the ship’s windlass, the whole room must be dark at night(only LED lights are visible in that dark room) nothing to worry on daytime, so you can clearly see any oncoming obstacles that your ship or vessel may encounters.

You are provided with the following tools as an aid to navigation, and here are the following instruments:

DIVIDER
An instrument having 2 legs tepering to a very sharp point used to measure distance in the nav chart.

BINNOCULAR TELESCOPE
A handheld instrument capable of optical zooming at great distance, magnifying

objects having two eye piece.

PELORUS
Pelorus as a Dummy Compass, it is an instrument sight vanes used to observe bearing of an object.

SEXTANT
An instrument that derives it’s name from 1/6 of a circle and to observe altitude of a Celestial Bodies and also to measure vertical and horizontal angles.

MAGNIFYING GLASS
A piece of glass (usually round on its edge shape with a handle grip) preferably wide glass in diameter, used to magnify small letterings and symbols on the navigational charts or maps.

COMPASS AZIMUTH
A pitting place above or top of the mag compass having a sight arms for taking bearings of distance objects.

CHRONOMETERS
A perfect watch instrument which gave time of GMT or Greenwhich Mean Time.

FATHOMETERS
Expressed measurements in Fathoms, it is an instrument used to measure the depthness of the water runned by electricity.

PARALLEL RULERS
Are rulers parallel to each other connected by joints so that when one is move forward or let’s say backward, they remain parallel to each other, used to plot bearing on the chart’s to fix ship’s or vessels

position.

PLOTTING SHEETS
Are ready made navigational charts composed of Latitude, Longitude, and compass rose where ship’s position are plotted.

NAUTICAL ALMANAC
Publications where the altitude of heavenly bodies, etc., are place according to their Greenwhich Mean Time.

GYROSCOPIC LAWS
A Natural Laws upon which Gyro Compass operations depends.
Example of such laws are Gyroscopic Inertia, tends to keep the rotational wheel in the same plane and resists any force depends on the moment of inertia and velocity of the spinning rotor.
Precession, a property of gyroscope which causes the spin axis to change direction when a torque or for applied to gyro compass.
Earth Rotation, The direction of the spin axis to change direction when a torque or force applied to the gyro.
Gravity Effect, the horizontal earth rate causes the gyro spin axis to tilt in relation to the surface of the earth. The effect of this whether it be a force applied mechanically or whether it be the force of gravity of accelerations.
 



Article Written By mantis36

mantis36 is a blogger at Expertscolumn.com

Last updated on 25-07-2016 5K 0

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