The ship, which had set out from Barcelona, was sailing under the flag of Portugal and was one of the main boats of the Global Sumud Flotilla’s aid operation, the group said. Known as the Family Boat, it was slated to bring members of the group’s steering committee, including the Swedish activist Greta Thunberg, to Gaza, it said.

A boat of the Global Sumud Flotilla heading to Gaza was struck by a drone, the nonviolence coalition said Tuesday.