2004 Northern Bay 31 — Solid Glass Lobster-Style Cruiser, Fully Repowered and Upgraded
This is a serious, well-built boat that has been continuously improved. The hull is solid fiberglass with a vinylester exterior layer, laid up and built by Stephan Newman — a 1.5-year build process that would cost $500K–$600K to replicate today. Everything on the boat works, and I've invested heavily in making sure it stays that way.
KEY FEATURES:
- Solid glass hull with vinylester exterior — hand-laid by Stephan Newman, built to last with no compromises in construction quality.
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- New Bomon Windows (2025) and new custom mast with Durabright lights — the topside has been refreshed and is ready to go.
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- Bottom soda blasted last season, all through-hulls redone, and fresh bottom paint applied — the underwater gear is in excellent shape.
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- Cockpit shower with hot and cold fresh water, Seafrost DB refrigerator box, and 50-gallon water tank — comfortable amenities for extended trips.
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- New Xantrex 1000W inverter/charger (2026), new 4D engine battery, and two new 6V house batteries (2026) — the electrical system is fresh and reliable.
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POWER & DRIVE:
Engine: Yanmar 6LY400CR 400hp diesel inboard, repowered new in 2024
Gear: ZF85A 1.56:1 ratio, 1.75" shaft
Prop: 4-blade Acme 22x18, new this season
Hours: Approximately 350
Cruise: 21 knots at 70% load, 14 GPH
WOT: 25 knots
The 2024 repower with the new Yanmar 6LY400CR gives this boat a fresh heart — Yanmar diesel inboards are known for their reliability and fuel efficiency in demanding marine environments, which pairs well with the 170-gallon tank for serious range.
FUEL & RANGE:
Fuel: Diesel, 170-gallon tank (new in 2025)
Burn: 14 GPH at 21-knot cruise
Water: 50-gallon tank
ELECTRONICS:
- Dual-screen Simrad EVO 3 (new 2021)
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- Airmar 1000W transducer (new 2021)
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- Simrad Radar (new 2021)
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- Morad Antenna (new 2021)
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- New Icom VHF radio
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- New Simrad autopilot
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LOCATION:
Brewster, MA 02631
