The Moss-type LNG ship accounts for 22% in global LNG carriers.Among them,the manifold of LNG ship with five spherical tanks has a very different position from the OCIMF criteria,resulting in the off-centered berth,and the mooring effect is poor in the case of symmetrical dock arrangement.Through the comparison of examples,the mooring conditions of the representative ship type under the condition of symmetrical and asymmetrical general layout are studied.It is concluded that the asymmetric general layout can better adapt to the mooring of Moss-type LNG ship.Under the premise of taking into account the mooring of non-Moss-type LNG ship,the asymmetric arrangement of wharf improves the mooring effect of Moss-type LNG ship and the berthing compatibility of the whole terminal.