METHOD FOR OFFSHORE LOADING OF A TANKER AND CONSTRUCTION OF SAID TANKER

摘要

A method and a vessel for offshore oil loading, wherein the vessel comprises a number of centre tanks (3) arranged in the longitudinal direction of the vessel, and a number of wing tanks (5, 6) located in pairs on either side of respective centre tanks, a loading line (19) being connected to the centre tanks (3) via respective valves (20), and adjacent centre tanks (3) being connected to each other via bulkhead valves (18). The method comprises the steps of a) firstly effecting filling of a desired number of the centre tanks (3), these being substantially narrower and having a correspondingly smaller volume than the wing tanks (5, 6), b) thereafter opening bulkhead valves (17) between a centre tank (3) and an appurtenant wing tank pair (5, 6), and sluicing out oil from the centre tanks (3) into the two wing tanks (5, 6) by means of the static pressure from the centre tanks, the bulkhead valves (18) between the centre tanks (3) being open, so that the wing tank pair (5, 6) is filled as quiclky as possible by suitable operation of the bulkhead valves (18) between the centre tanks (3) and of the valves (20) of the loading line (19) to the centre tanks (3), c) closing the bulkhead valves (17) to the two wing tanks (5, 6) when these and the appurtenant centre tank (3) are filled to a desired level, and d) repeating the filling process according to the steps b) and c) successively for additional wing tank pairs (5, 6) after that all centre tanks (3) have been filled again.