🧭 Tidal/Current Observations And Station Official Source · Verified Jun 09, 2026 NOAA CO-OPS tide station: Friday Harbor, WA — Station ID 9449880. Products: tide predictions, datums (MLLW-based), harmonic constituents, historical water levels. 95% Confidence ✓ Confirm 💬 Comment
🧭 Port Of Friday Harbor Marina Operational Cautions And Communications Operator Source · Verified Jun 09, 2026 Port guidance and marina Rules & Regulations: hail on VHF channel 66A when in sight of the marina; inside the breakwater is treated as narrow channels under Inland Rules; harbor speed limit 4 knots (or no-wake), anchoring prohibited inside breakwater and within 100 ft of any float and within 300 ft of the breakwater; engines in gear prohibited when tied to finger piers. 94% Confidence ✓ Confirm 💬 Comment
🧭 Charting Authority And Primary Noaa Chart Official Source · Verified Jun 09, 2026 Primary U.S. charting authority: NOAA Office of Coast Survey. Principal NOAA folio chart covering Friday Harbor: Chart 18434 (San Juan Channel / includes Friday Harbor). 92% Confidence ✓ Confirm 💬 Comment
🧭 Entrance Character And Local Channel Cautions Official Source · Verified Jun 09, 2026 San Juan Channel and connecting passes contain narrow passages with 'considerable velocity' tidal currents; Coast Pilot explicitly advises that channels and passes should be attempted only by vessels with local knowledge and that mariners not familiar should take a pilot. 92% Confidence ✓ Confirm 💬 Comment
🧭 Pole Pass Narrow Fairway And Speed Restriction Official Source · Verified Jun 09, 2026 Pole Pass fairway is about 75 yards at its narrowest; a 7-knot speed limit is enforced through Pole Pass (Coast Pilot notice). 91% Confidence ✓ Confirm 💬 Comment
🧭 Specific Shoal / Charted Hazard (North Pass / Reef Island) Official Source · Verified Jun 09, 2026 Coast Pilot notes a rock covered 10 feet 0.3 mile east of the north end of Reef Island in North Pass (charted hazard referenced in Coast Pilot). 90% Confidence ✓ Confirm 💬 Comment
🧭 Seaplane Operations And Signaling Official Source · Verified Jun 09, 2026 Coast Pilot and Port references: a seaplane float is adjacent to the customs float; three amber strobe signal lights in the harbor (locations noted) are reported to signal seaplane takeoff or landing when activated. 88% Confidence ✓ Confirm 💬 Comment