Tersane Adası is the largest island in Göcek Bay. The bay on NW affords all-round shelter. The entrance of the bay is not easily identified from a distance. The entrance lies between two steep slopes. There is good depth in the strait, mostly 20m and the depths drop 5-10m in the cove. The bottom is sand-weed. The bottom gradually shelves to shore, and ends in a pool. Care is needed at night. It gets swell from the strait. Ease your chain as much as possible. The northern and southern corners are adequate anchorages to be tucked up with a line ashore. 

Tersane Koyu is a winter port, providing all-round shelter. The settings are attractive. There is a pretty restaurant and a quay where berthing is available up to 15 boats. There are laid moorings tailed on quay. The ruins ashore are from the anchient boatyard settelements. A number of goats live on the island, their voice is higher pitched at night.

This anchorage gets crowded by excursion boats by noon time, but it is calm and quite at night. It is better to arrive in late and leave before noon the next day.