S1:Now let's check if the vessel is prepared for loading.S2:Yes,Sir.S1:Is cargo list available and complete?S2:Yes, cargo list available and complete.S1:Are holds clean?S2:Yes, they are swept clean.S1:Are safety arrangements in holds operational?S2:Yes, safety arrangements in holds operational.S1:Good. Are sufficient dunnage and mats available?S2:Yes, sufficient dunnage and mats are available.S1:OK. Fill double bottom tanks before loading heavy lifts. Q4:When shall the double bottom tanks be filled?