There are a number of things that could cause the ship to turn around, like lack of food and water or problems with the engine.

Thunberg and 11 other activists are on board a ship headed to Gaza with aid supplies, but the IDF has said it does not intend to allow the ship to dock.

The Freedom Flotilla Coalition (FFC) continues its mission to break Israel’s siege on Gaza, despite Israeli threats to intercept its vessel, the Madleen. The UN has called for the protection of the ship,