The main objective of Hatch covers is to prevent the ingress of water into the cargo hold. As ingress of water can damage the cargo in the hold. Now depending on the cargo and other factors like maintenance cost, One-time manufacturing cost, Hatch covers can be broadly divided into the following types
Roll stowing type
The side rolling types, operated hydraulically, are used on bulk carriers and operate/stow in a transverse direction. The pontoons move on a pair of transverse ramps. look at the image
One of the most asked question in the interview is Boxing of the compass. The interviewer will give you a pen and paper and ask you to box a compass from North to East or South to east anything and you must remember this a small mistake can take your job opportunity.
To remember Boxing of the compass, you only have to remember from North to East or whatever is your preference, if you remember that you can easily make for other directions.
How i remember From north to East.
North by East (we are coming north from the east side, If we come north from the west side it is NbW).
NNE ( 2 north means, 2 points away from the north)
NE by North (we are coming to NE from the north side)
North East (Easiest to remember it is between North and East)
NE by East (Northeast is closer form East )
ENE (THE ONLY THING YOU NEED TO REMEMBER)
EbN (East by North)-( same as point 2 above)
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It is a device that alerts SAR (search and rescue services) in case of an emergency at sea. It is mandatory to carry one EPIRB on every ship and two EPIRBS for all INDIAN Registered ships.
An EPIRB transmits signals to the satellite. The signal consists of encrypted codes containing the following information about.
date of the event
nature of distress
Types Of EPIRB
COSPAS-SARSAT 406.025 MHz and 121.5 MHz band
INMARSAT E 1.6 GHz band
VHF CH 70 156.525 MHz band
The EPIRB needs to be activated to emit signals. This could be done by pushing a button on the unit, or it could happen automatically if and when it comes in contact with water.
48 hours of transmitting capacity
Normally replaced every 2 to 5 years
It is possible that the EPIRB might get activated by mistake, In case the EPIRB is falsely activated, the nearest coast station or RCC (Rescue Co-Ordination Center) must be informed just after the event.
What sound signal should be made by a pilot vessel engaged on pilotage duty and at anchor?
A pilot vessel at anchor shall at an interval not more than one minute ring the bell rapidly for 5 seconds.
In a vessel, 100m or more in length – bell shall be sounded in the forepart of the vessel and immediately after the ringing of the bell, The gong shall be sounded rapidly for 5 seconds in the after part of the vessel.
Shipping is a global business and needs global monitoring in order to respond to security concerns posed by the ships across the world. LRIT is an international tracking and identification system introduced by the IMO under its SOLAS chapter 5 to ensure a thorough tracking system for ships across the world.
It came to existence on 19th May 2006. Ships which were built on or following 31st December 2008 were required to have this system.
Long Range Identification and Tracking(LRIT) is based on satellite communication. The most important advantage of having this system is that the information required to be shared is restricted only to those parties which are required to have it.