Hydra’s Port Authority office is located on the second floor of the building adjacent to the Melina Mercouri Gallery, above the Volunteer Fire Department. Mooring at the port of Hydra is the responsibility of the Port Authority. The promoters of the Municipal Port of Hydra and of the Port Authority are at your disposal for any clarification and assistance. Sailors and yachters mooring in Hydra Harbor can pay their port dues here. They will need to bring with them the appropriate shipping documents for their boat.