Second Mate Spot

Vertical Beam Width: Radar should function without any deterioration in performance when the vessel is rolling or pitching up to 土 10 deg. In commercial marine RADAR sets VBW is between 15 - 30 deg. Horizontal Beam Width: When vessels are at same range, but slightly different bearing, they should appear as 2 distinct targets on PPI. HBW is between 0.6 - 2.0 deg. R ange Discrimination: Two smaller similar objects on the same bearing separated by 40 mtr in range, should be separately indicated when using a range scale of 1.5M or less when they lie between 50% and 100% of the range scale in use. Bearing Discrimination:   Two targets should be separately visible when the lie on the same range by 2.5 deg. Minimum Range: The Minimum detection scale, with a scanner 15 mtr high, shall not exceed 40 mtr. Targets between 40 mtr and 1M should be displayed without resetting any control other than range selection. Range Accuracy: The error in a range of an object, obtained using range ring...

Manual and/or Automatic acquisition for relative speeds up to 100 Kts . However manual acquisition must be possible. Track, Process, Simultaneously display and continuously update the information on at least 20 targets , whether automatically or manually acquired. Display on request with relevant symbols at least 4 equally time spaced past positions of any target being tracked over a period appropriate in the range scale in use. Should be available on  3, 6 & 12 nm Range scales. Present in not more than 1 min - an indication of targets motion and within 3 min - targets predicted motion . After changing range scales, full target information should be displayed within a period of time not exceeding 1 scan . Should be capable of giving Audible and Visual Alarms . The following data for each selected target should be provided, Range Bearing CPA TCPA True Course True Speed of the Target Should be provided with trial manoeuvre feature. Should not degrade the performance of any...

Actions are to be taken in the following sequence: Release the MOB Marker on the same side (lifebuoy with light and smoke signal) Hard over Rudder to the side of MOB  Press MOB button in GPS & ECDIS Inform Master (usually Master will be on the bridge when vessel is in TSS) Post extra lookouts and guide them to identify the person/MOB marker Sound 'O' on ships whistle (3 Prolonged blast) & hail " MAN OVERBOARD " Raise flag " Oscar " Inform VTS / Port Authority Inform E ngine R oom & Anchor party DO NOT PERFORM RECOVERY TURN IN TSS , ONLY TO BE DONE WHEN AUTHORISED BY TSS. Broadcast URGENCY message in VHF ( Later can be upgraded to DISTRESS if unable to start rescue immediately) Manoeuvre the vessel to ITZ or Separation zone for Anchoring Press VDR Backup button (if appropriate) Maintain watch on VHF CH16 (or Designated by VTS / SAR Authority) If VTS permits the vessel to commence Rescue, Rescue boat team must be mustered well in advance and p...

Inform Master. Switch over to GPS 2 (If fitted & working). Note down the last position obtained from GPS. Obtain the position of the vessel from Celestial or Terrestrial means . Increase the frequency of position fixing. Plot the position of the vessel in ECDIS. Inform VTS / Port Authority & Company Agent. Monitor the position of vessels in vicinity. Navigate the ship clear from any proximity to navigational hazard. Try to rectify the GPS by referring the GPS Manufacturers Manual. Keep a record of all events. Effect of GPS Failure:  ECDIS gives mandatory alarm & automatically switches over to DR mode.  Radar and ARPA switches to Relative motion. There are chances that Gyro may give an alarm, Since Gyro has latitude error and which needs GPS Sensor to correct the same. AIS will not transmit position of the vessel.

Inform Master. Note down Date, Time & Position. Inform VTS / Port Authority. Switch over to the Backup Gyro feed (if fitted). Switch over Autopilot to Hand Steering. Steer the vessel with Magnetic Compass. Obtain Magnetic Compass Error by celestial or Terrestrial means. Plot the position of the vessel frequently. Monitor the position of the vessels in vicinity. Try to troubleshoot the Gyro with reference to the manual, if unable to rectify inform the same to company agent. Keep a record of all events. Effects of GYRO Failure: RADAR will automatically switch to HeadUp mode & Relative motion ECDIS will give Alarm and will change the input to GPS - COG AIS will transmit "DATA NOT AVAILABLE" in heading of the vessel         

      Single RADAR Failure (X Band or S Band)   : Inform Master. Firstly, Navigate the vessel safely with the other RADAR(If fitted). Reduce speed if appropriate. Try to identify the cause for RADAR Failure by Troubleshooting as per Manufacturer Manual. Inform VTS / Port Authority & Company Agent. Keep a record of all events. Both RADAR Failure (X Band & S Band) :  Inform Master. Reduce Speed of the vessel. Post extra lookouts. Do manual plotting by obtaining Bearing and Range of the target vessels from AIS. Monitor the position of the vessels in vicinity. Monitor the proximity to any danger to Navigation. Inform VTS / Port Authority & Company agent. DO NOT SWITCH ON NUC LIGHTS / SHAPES Pass at a safe distance from all Navigational Hazards by using PI (Parallel Indexing) in ECDIS. Broadcast SAFETY Message in VHF CH70(Alert) & CH 16. Also check our Topics: Action to be taken when MOB in TSS. Action in case of GPS Failure. Action in case of...