Periodic ship survey and inspection: Is docking required? by WPgmcno | Aug 14, 2018 | Classing, Docking, Periodic surveys, Shipyard | 0 comments Periodic surveys and inspections of ships are carried out to ensure the safety and seaworthiness of vessels. Not all of them needs docking. Related posts: Does the ship have to be gas free before dry-docking? Do you need to drain the ship of gas before docking? Inspection by anchor or going to dry dock? Dry-Docking: How to select the right shipyard?