KRP Difference between VDR and SVDR, SOLAS requirement, VDR advantage SOLAS requirement / carriage requirementSVDRCargo ships of 3,000 gt and above, international voyage.VDRAll passenger ships constructed on or after 1 July 2002.Ships other than passenger ships of 3,000 gt and above constructed on or after 1 July 2002. Difference between VDR and SVDRSVDRCargo ships of 3,000 … Read more
Voyage Data recorder operation, VDR capsule, Data recorded VDRData recording system.Collect data from various sensors.Store the collected data in an externally mounted unit. (Capsule)Capsule is tamper proof – fire, explosion, collision, sinkage. SVDRSimplified voyage data recorder.Collect normal ship data.Lower Cost. VDR capsuleCapsule is tamper proof – fire, explosion, collision, sinkage.Storage unit.Fixed or float free unit.Retrievable.Store … Read more
Auto pilot principle, control or setting, SOLAS requirement Auto pilot principleAutopilot has a knob to set course.Autopilot also receives gyro feedback from gyro.The difference between the set course and gyro feedback will be compared by the comparator.Comparator will generate an error signal.Comparator will send this error signal to master solenoid.Master selonoid will operate hydraulic telemotor.Now, … Read more
Doppler log principle, error, Advantage, Disadvantage Doppler logDistance and speed measuring device.Doppler log works on Doppler principle.Since we know velocity of sound wave in water.So, By measuring transmitting and receiving frequency vessel speed is found.When vessel moves relative to a reference point on seabed. At the forward part, under the ship’s keel, a transducer is … Read more
Echo Sounder Control switch, Error, Maintenance of echo Sounder On / off switch:Range switch: 0-100 MGain switch: to get clear echoesDraft setting switch: ship draftBrilliance or dimmer switchPaper speed control switchTransducer changeover switch: if two or more transducerFix mark: to get depth at certain time Error of echo Sounder Velocity of propagation: velocity change with … Read more
