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NAVOPLAN

Port Intelligence Brief

Machiasport, United States

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62 Verified Intelligence Items

54Verified
Intelligence

25Official
Sources

89%Overall
Confidence

📍

CoordinatesN 44 42' .0000"
W 67 24' .0000"

⚓

Harbor ProfileNorth Atlantic Ocean
Size: Very Small

🛂

EntranceTidal Range: 13.12 ft
Depth: 20.99 ft

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Port StatusPort of Entry: Yes
Shelter: Good

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Last UpdateJun 28, 2026
09:30 ET

🧭 Approach & Entrance 7 items

🛟 Shelter & Refuge 6 items

⚠ Local Cautions 8 items

🛒 Crew Rest & Resupply 7 items

☎ Harbor / Authority 5 items 🔒

📡 Contacts & VHF 5 items 🔒

🛥 Marinas 6 items 🔒

⛽ Fuel & Utilities 5 items 🔒

🛂 Clearance & Formalities 6 items 🔒

🚑 Medical & Emergency 7 items 🔒

1 - 10

Current Briefing

Approach & Entrance

Machiasport approach intelligence includes pilotage, entrance channel depths, harbor communications, traffic density, anchoring restrictions, and operational cautions for arrival planning.

1 - 1

Verified Intelligence

Charting Authority / Primary Charts

Official Source · Verified Jun 28, 2026

Primary NOAA chart: Chart 13326 'Machias Bay to Tibbett Narrows'. Use NOAA ENC and U.S. Coast Pilot 1 (Chapter 5) for Machias Bay/Machiasport.

95% Confidence

Passage Cautions — Cross Island Narrows

Official Source · Verified Jun 28, 2026

Coast Pilot caution: 'Craft bound for Machias Bay and River from the eastward should not attempt passage through Cross Island Narrows without local knowledge.'

95% Confidence

Tidal/Current Prediction & Regulatory Note

Official Source · Verified Jun 28, 2026

NOAA Tides & Currents provides tide and tidal‑current predictions (NOAA station Machiasport 8411467). Coast Pilot notes predictions should be generated in advance and stored/printed to meet USCG carriage requirements; slack water times may differ from high/low water.

92% Confidence

Entrance Character / Prominent Marks

Official Source · Verified Jun 28, 2026

Main entrance ~2-mile-wide between Cross Island (east) and Stone Island (west); Libby Islands lie in the middle of the entrance. Libby Island Light marks the southwestern Libby Island; Avery Rock light marks mid‑bay.

90% Confidence

Known Shoals / Marked Hazards

Official Source · Verified Jun 28, 2026

Seal Cove Ledge: extends ~400 yds SW from Cross Island, least depth ~10 ft, buoyed on SW side. Stone Island Ledge: ~0.2 mile E of Stone Island, covered ~8 ft, marked by a daybeacon. Colbeth Rock reported as unmarked in approaches.

90% Confidence

Machias River Channel Depths & Buoying

Official Source · Verified Jun 28, 2026

Least depth in the channel to Machiasport ~17 ft (to town); the river channel is buoyed to about 0.8 mile below Machiasport; above Machiasport channel shoals and local knowledge is required. Coast Pilot: 'best time is at low water when the flats are visible.'

90% Confidence

Local Maintenance / Dredged Channel (Bucks Harbor)

Official Source · Verified Jun 28, 2026

U.S. Army Corps of Engineers (Bucks Harbor, Machiasport) reports an 8‑ft maintained channel and an 8‑ft turning basin (USACE channel condition report; references NOAA Chart 13326).

80% Confidence