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 ~150 Water Ocean/Bay Confidence High

Large marina with extensive finger docks packed with boats extending into open ocean water; no parking lot or landside facilities visible in this water-focused tile.

Aerial view of Thomsen Harbor
Pacific Coast

Thomsen Harbor

Sitka, AK

Thomsen Harbor is situated in Sitka, Alaska, on the southeastern coast of Baranof Island within the Alexander Archipelago, offering a sheltered mooring spot along the rugged Pacific Coast amid towering mountains and dense temperate rainforests. This marina primarily serves a mix of commercial fishing vessels, recreational sailboats, and small powerboats, catering to the region's abundant marine resources and the popular Inside Passage waterway for both local and transient boaters. Its location in this remote, scenic area makes it a key point for accessing the waters around Sitka Sound.

Location Sitka, Sitka, Alaska
Capacity ~150 slips
Coordinates 57.0566, -135.3516

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.