It is still under construction, but part of the building is functioning and can receive and send passengers to the Princes Islands, for example, at city rates and using an Istanbul Card. In front of the entrance to the waiting room there are vending machines for replenishing Istanbul cards. Fares for trips to the islands were not found, only the ferry schedule. Entrance through the turnstile for boarding. We were charged a little less than 60TL for travel to the final Buyükada (Adalar Island). A very attractive price, although near a public transport stop a barker with a sign sent in the other direction, where the fare costs several hundred lira. The commercial bot was sent 15 minutes earlier! The ferry is huge with a capacity of hundreds of people, there is a toilet and comfortable chairs. To the final one according to the schedule 1 hour. 50 minutes.
The city marina from where you can go to the Princes' Islands for reasonable money. The city ship is always large and comfortable. The ship departs every hour.