The respondents were German companies that owned vessels chartered to Hanjin Shipping Co Ltd. They had claims for unpaid charter hire. On 1 September 2016, Hanjin Shipping entered rehabilitation proceedings. On 2 September 2016, the respondents issued protective writs (summonses in rem and warrants of arrest) against various associated ships, including the Hanjin Gdynia. At the time of issue, the Hanjin Gdynia was owned by J O O Shipping SA, a one-ship company controlled by Hanjin Shipping. On 14 December 2016, the mortgagee caused J O O Shipping to sell the vessel to Seaspan Holdco 1 Limited (first appellant). Delivery occurred on 29 December 2016, and the vessel was renamed the Seaspan Grouse. This sale was bona fide and occurred before the vessel was arrested. On 23 August 2017, nearly a year after issuing the protective writs, the respondents arrested the Seaspan Grouse in Durban. Security was provided and the appellants applied to set aside the arrest.