296 ALR 265 at 284 that upon withdrawal of the ship and termination of the charter, the nature of the charterer possession changes from possession for the charterer s use and benefit to possession as a gratuitous bailee for the owners. Possession of the latter kind is substantively different in character to the plenary right to possession and use of the ship formerly enjoyed by the charterer while the charter remained on foot. [64] When the charterer is in possession as a gratuitous bailee under cl 29, he holds the ship for the sole use and benefit of the owners. When, however, he is in possession because of the demise of the ship to him, the charterer holds her for his own use and benefit. The effect of withdrawal and termination of the charter under cl 29 is the same as a physical redelivery to the owners because the charterer has lost his contractual authority and right to use and / or employ the ship as he pleases. The concept of constructive delivery of chattels, without any change of physical possession, is well - established in the law of bailment. In the classic text by Pollock and Wright, An Essay on Possession in the Common Law, Oxford, 1888, pp 72 - 3, the learned authors discussed the position of a seller in possession of goods who could assent to holding what was sold on account of the buyer. [66] Hako Offshore contracted in cll 28 and 29 that it would become the owners gratuitous bailee of Hako Fortress upon the owner exercising ifs right of withdrawal and termination. That is, the parties contemplated and provided in their contract that the nature of Hako Offshore possession would change, if the ship was withdrawn and the charterparty terminated, from that of a contractual right to the full use and enjoyment of the ship to become that of gratuitous bailee for the owners, Dolphin 2. That change was , that Hako Offshore acknowledged receiving on 5 March 2012. Dolphin 2 had been entitled at that time to exercise its right to withdraw the ship and terminate the Barecon charterparty because Hako Offshore had not paid hire within 14 days of the notice of default that was sent on 21 October 2011. It is safe to infer that that letter would have been received in the ordinary course of post by not later than 28 October 2011. [67] Accordingly, after following Hako Offshore s receipt of the notice of termination on 5 March 2012, it held Hako Fortress from then on as a gratuitous bailee and not as a demise charterer. It follows that the requirement of s 18 (b) of the Act, that Hako Offshore be a demise charterer of Hako Fortress on 2 April 2012 when the writ against her was filed, was not satisfied. The proceeding below against Hako Fortress must be dismissed and the security provided for her release from arrest must be returned to Dolphin 2.