KRP

Standard siting of magnetic compass, record keeping, care and maintenance Standard sitting:Fitted on monkey island above the bridge.Should be sitted on the ship’s centreline.Should not be sitted close to magnetic materials.Approved equipment should be at a safe distance.Radar magnetron should be at a distance of 7 meters. Importance of keeping deviation record:Compass error and deviation … Read more

Deviation change due to change in course Coefficient A:Constant deviation on all heading. Coefficient B:Maximum deviation on E, W heading.Deviation on any heading= coefficient B * sin compass course. Coefficient C:Maximum deviation on N, S heading.Deviation on any heading= coefficient C * cos compass course. Coefficient D:Maximum deviation on NE, SE, NW, SW heading.Deviation on … Read more

Coefficient change due to change in latitude Coefficient:Maximum coefficient is caused by one or more ship’s force.Maximum coefficient is caused by permanent Magnetism+induced magnetism.Coefficient is measured in degrees.Coefficient is not a force but produced from force. Coefficient B, C – change with change in latitude.Coefficient A, D, E – don’t change with change in latitude. … Read more

Probable cause to develop coefficient A If there is a constant deviation but magnetic compass is well sitted. Then this is due to coefficient apparent A. Probable cause:Variation incorrect.Constant LHA error.Faulty Azimuth mirror.Faulty pivot point for compass card.Lubber line is not in line with the F&A line of the ship.NS line of compass card is … Read more

Transmitting magnetic compass operating principle Conversion of magnetic compass into repeating compass.Flux gate is mounted below the compass card.Flux gate can detect magnetic field direction. (Position of the rotating compass card)Flux gate will produce output signal. Construction:Flux gate consists of two thin wires of mumetal.Each thin wire is placed inside a glass tube.Each Glass tube … Read more