If vessel is loading @ the rate of 4500 wat should b the venting capacity and how many tanks should be open for loading

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FOLLOW

Industry standard for tanker is only 6 tanks at any time loading. All loading rates calculations are based on 6 tanks only. Max loading rates for ur ship will depend on Cargo lines on board your ship with flow rate of 12m/s for inerted tanks and 7m/s for non-inerted tanks. Also the PV valve venting capacity to be checked for 36m/s(Venting at 36m/s), the lowest value between PV valve venting and Cargo lines to be taken as the loading rate of ur ship. Refer ISGOTT for better understanding or can call me anytime. :-)