Multi-lobe tank for containing pressurized liquids, such as liquefied gas, for mounting into a ships hull, wherein the tank comprises at least a first longitudinally extending multi-lobe tank part having a center line and a second longitudinally extending multi-lobe tank part having a center line that are positioned behind each other resulting in a forward multi-lobe tank part and a rear multi-lobe tank part with aligned center lines, wherein the first part can tapered towards an end of the first part.

A towed vessel suitable for containing and transporting various liquids is disclosed. The vessel further comprises various features useful in the transportation, navigation, and storage of the towable vessel, both when in use for transporting fluids and when transported in an emptied state. Such features include navigational and positioning devices and methods, power supply devices and methods, and means for filling, inflating, emptying, and deflating a non-rigid, towed vessel. Aspects of embodiments of the present invention further include features useful for purifying or preserving the purity of the fluid to be transported.

The invention relates to a transport ship (1) comprising a trim control system (10) not in communication with the sea, in which the trim control system (10) comprises: at least one front liquid tank (20), at least one rear liquid tank (30), a roll-stabilizing tank (40) including at least one pair of partition walls (42) arranged to slow a flow of liquid in the roll-stabilizing tank (40) along the transverse axis (Y-Y) of the ship, and a distribution device (60), the distribution device being in communication with said at least one front liquid tank (20), said at least one rear liquid tank (30), and said roll-stabilizing tank (40), and being designed to distribute a volume of liquid therebetween.