Notice Not affiliated with the Master Mariners Benevolent Association (MMBA) or any successor organization. v.2026.05
General Overview
Facility 🚤 Full Service Marina Est. Slips ~120 Water Ocean/Bay Est. Parking ~75 spaces Lot Size Medium (50–150) Lot Type Surface Confidence High

Medium-sized marina with multiple piers full of boats, surrounded by clustered buildings and several surface parking areas with visible vehicles but no striping or access controls.

Aerial view of Middle Harbor
Pacific Coast

Middle Harbor

Petersburg, AK

Middle Harbor is a marina situated in Petersburg, Alaska, on the eastern shore of Mitkof Island within the Alexander Archipelago, where it overlooks the Tongass Narrows and is influenced by the surrounding fjords and glacial waters of southeastern Alaska's Pacific Coast. It primarily serves commercial fishing vessels, given Petersburg's prominence as a fishing hub, as well as recreational boating enthusiasts navigating the protected inland waters of the Inside Passage. This location provides access to the dynamic marine environment of the region, characterized by tidal fluctuations and proximity to the open Pacific Ocean via channels like Frederick Sound.

Location Petersburg, Petersburg Borough, Alaska
Capacity ~120 slips
Coordinates 56.8117, -132.9601

Nearby Marinas in Alaska

Marina Parking & Access Control

Marinas typically need to separate slip holder parking from day-visitor parking, trailer areas, launch ramps, and secure dock access points. Modern facilities use barrier gate systems to enforce these zones automatically — allowing permitted vehicles through via transponder or keycard while logging all access events.