Tunnel2Funnel

INDIAN Search and rescue region ( ISSR) :-        Conforming to the provision of SAR convention 1979, Indian coastguard has brought into operations a supplementary ship position reporting system with effect from 1st Feb 2003 called Indian ship reporting system ( INDSAR) . This system is operated and maintained by Indian coastguard through their Maritime Rescue co-ordination center at Mumbai.( MRCC)                          All Indian ships of 100 GRT and above entering into or transiting ISRR shall participate in INDSAR reporting system. All ships other than Indian ships of 300 GRT and above entering or transiting through the above region are encouraged to participate in INDSAR reporting system.            All ships of 100 GRT and above irrespective of the Flag carrying a nuclear or other inherently dangerous or noxious substances or materials entering into ISRR are encouraged to participate in INDSAR reporting system for safety.     All ships of 20 years and above irrespective o

Vessel face sometimes troubles while using residual fuels, even though fuel testing lab shows results to be in satisfactory condition.The root cause of such troubles is due to presence of asphaltenes.       Asphaltenes are components of asphalt that are insoluble in petroleum naphtha but are soluble in carbon di sulfide. They are hard and brittle and are made up largely of high molecular weight poly nuclear hydrocarbon derivatives containing carbon, hydrogen, sulfur, nitrogen, oxygen and usually three heavy metals:- nickel, Iron, vanadium.       As per fuel standards ISO 8217: 2010 carbon content limit is 18% m/m, whereas once the carbon content exceeds 15% m/m chances are higher for asphaltenes.       Though asphaltenes are useful component of fuel oil but high level of asphaltenes can impair the combustion quality of the fuel oil, promoting increased  wear and fouling of engine components.     Asphaltenes cause sludge formation and deposits in fuel tanks and oil lines. Asphalten