STS Operation for Singapore Flag Ships Tec No.:TEC- 1346 (824kb) Contact:Hull Department Issued:14 Feb 2025 Singapore MPA issued Shipping Circular No.16 of 2024 for mid-ocean Ship-to-ship (STS) operations for Singapore-registered ship. Please note the following points on Ship-to-ship (STS) Operations Plan for Singapore-registered ships. 1. If a Singapore-registered ship carry out mid-ocean STS operation, notification procedure to the Flag Administration is required to be included in STS Operations Plan of the ship. Herein, "mid-ocean" means sea area other than the territorial sea, or the exclusive economic zone where notification of STS operations to the Authority is required in Reg.42, Annex I of MARPOL. 2. Ship having approved STS Operations Plan and will carry out mid-ocean STS operation is required to insert pages for notification procedure to the Flag A