Flinders bar

Flinders bar Cylinder like arrangement on fwd or aft side of the binnacle.Contain soft iron.Length: 60 cm (600 mm)Diameter: 7.5 cm to 10 cm (75 mm)Made of: brassIf superstructure abaft the compass, flinders bar on forward part. If superstructure forward of the compass, flinders bar on after part.

Magnetic degaussing

Magnetic degaussing Decreasing or eliminating a permanent magnetic field.It is not possible to reduce a parmanent magnetic field completely to zero.Technically create an opposite magnetic field known as Bias. PurposesEstablish a neutral condition of parmanent magnetic field near the ship.Reduce the possibility of detonation of dynamite or mine. Application on ShipElectromagnetic coil.Electrical cable is coiled … Read more

Why resulting deviation from HSI remain same in all latitude?

Why resulting deviation from HSI remain same in all latitude? Ships HSI (F&A, athwartship) induced by only H.We know, If magnetic latitude change – DF(H) change.But, deviating force due to DF(H) also change.Therefore, we can tell, if DF(H) get bigger deviating force get bigger.If DF(H) get smaller deviating force get smaller.Again, we also know, If … Read more

Effect of parmanent and induced magnetism with change of latitude

Effect of parmanent and induced magnetism with change of latitude Effect of parmanent magnetism:PQR force – Constant deviating force.PQR – Will not change with change of latitude.For a constant PQR deviating force,If magnetic latitude increase – DF(H) get smaller (deviating force get bigger)If magnetic latitude decrease – DF(H) get bigger (deviating force get smaller)So, Dev … Read more

Magnetic compass parts and correctors

Magnetic compass parts and correctors Fitted on monkey island above the bridge.Telescopic viewing arrangement is made for helmsman. Magnetic compass parts:Compass bowlCompass cardGimbal arrangementGimbal ringBinnacle Compass correctors:Flinder barsQuadrantal SpheresHeeling magnetsFwd and aft magnetsAthwartship magnets Compass bowlFitted on the gimbal arrangement.Inside compass bowl, compass card is fitted.Inside compass bowl, liquid is filled. (wet compass card)Liquid reduces … Read more