Esther Passage

A narrow, highly protected wilderness corridor separating Esther Island from the mainland, offering steep granite walls and pristine coves.

📍 148.000°W · 60.850°N 2 Active Anchorages 1 Cruising Routes

Region Overview & Navigation

Esther Passage is one of the most celebrated scenic cruising passages in Prince William Sound. Running north-south between Esther Island and the mainland, the passage is bordered by dense spruce forests and sheer granite faces that rise out of the dark water.

Navigation & Safety

  • Moraine Sills: The northern and southern entrances of the passage feature shallow terminal moraines. The northwestern entrance sill is highly shallow at low tide and demands close monitoring of the depth sounder. Power vessels with significant draft should time transit with a rising tide.
  • Speed Limits: The passage is a narrow waterway frequented by sea kayaks, tour boats, and smaller pleasure craft. Keep wake minimal and remain vigilant for oncoming traffic around sharp blind turns.
  • Anchorages: The passage houses the beautiful and popular Surprise Cove State Marine Park, which offers highly protected anchorages and secure holding.

Key Region Highlights

Shallow Moraine Sills
Surprise Cove State Marine Park
Granite Cliffs
Protected Transit

Anchorages in Esther Passage

⚓ Granite Bay State Marine Park
Fair Holding Depth: 40-80ft 📍 60.9000°N, 148.0500°W
⚓ Surprise Cove
Excellent Holding Depth: 30–45 ft 📍 60.9220°N, 148.4850°W

Cruising Routes in/through Esther Passage

🚢 Esther Passage Loop

Cruising from Whittier to Whittier (loop) · 52 NM

INTERMEDIATE 16 Hours