Beneteau First 34.7 2005 boat specs
Beneteau
Beneteau First 34.7 2005
2005
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VS
Beneteau Oceanis 37.1 2023 boat specs
Beneteau
Beneteau Oceanis 37.1 2023
2023
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Beneteau First 34.7 2005 vs Beneteau Oceanis 37.1 2023 — Same Brand, Different Boat

The Beneteau First 34.7 2005 vs Beneteau Oceanis 37.1 2023 comparison sits squarely in the category of decisions where specs alone won't tell the whole story — intended use, storage, and long-term ownership costs all factor in.

Both boats share a closely matched power ceiling — 21 hp for the Beneteau First 34.7 2005 and 40 hp for the Beneteau Oceanis 37.1 2023. Real-world performance will come down more to which motor is actually bolted on, its load at the time, and whether it's a 4-stroke or 2-stroke setup. Fuel capacity breaks the other way: the Beneteau Oceanis 37.1 2023 carries 34 gallons versus 20 gallons in the Beneteau First 34.7 2005. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The Beneteau Oceanis 37.1 2023 is rated for 11 passengers, while the Beneteau First 34.7 2005 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Beneteau Oceanis 37.1 2023 could be the deciding factor.

The Beneteau Oceanis 37.1 2023 has a documented displacement of 15 128 lbs. Displacement data wasn't available for the other boat in this comparison.

Both boats draw a similar depth — 6,7 ft and 6,1 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.

The Beneteau First 34.7 2005 uses Sloop rigging. For auxiliary power the Beneteau Oceanis 37.1 2023 carries a 40-hp engine against 21 hp on the Beneteau First 34.7 2005. Motoring range and ability to punch through a foul current or enter a tight marina under power will favour the more powerful installation.

For extended cruising, water capacity matters: the Beneteau Oceanis 37.1 2023 carries 94 gallons versus 26 gallons on the Beneteau First 34.7 2005 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.

Bottom line: The Beneteau Oceanis 37.1 2023 at 39,2 ft offers more living space, greater range, and a more substantial offshore capability. The Beneteau First 34.7 2005 at 34,0 ft is the easier, lower-cost option — simpler to crew and a strong choice for coastal and day sailing.
Measurements / Dimensions
Length overall - Detail34.00 ft
Length overall - Detail39.20 ft
Length - Feet34
Length - Feet39.2
Length overall - Meters10.36
Length overall - Meters11.95
Length overall - Inches408
Length overall - Inches470
Beam11.10 ft
Beam12.10 ft
Beam - Meters3.38
Beam - Meters3.69
Beam - Inches133
Beam - Inches145
Draft [max] - Detail6.70 ft
Draft [max] - Detail6.11 ft
Draft [max] - Meters2.04
Draft [max] - Meters1.86
Draft [max] - Inches80
Draft [max] - Inches73
Displacementnot available
Displacement15128.00 lbs
Body / Hull
Rudder1 spade rudder
Ruddernot available
Helm1 wheel
Helmnot available
Engine and Drivetrain
Fuel tank capacity - Gal19.8
Fuel tank capacity - Gal34
Fuel tank capacity - Liters74.95
Fuel tank capacity - Liters128.7
Horsepower21 hp
Horsepower40 hp
Fuel typeDiesel
Fuel typenot available
Drive typeinboard
Drive typenot available
Performance
Maximum speed7.17
Maximum speednot available
Maximum speed measureknots
Maximum speed measurenot available
Operational Info
Sleeping capacity5
Sleeping capacity6
Cabins1
Cabins3
Head1
Head1
Water capacity26.4
Water capacity94
Holding tank capacity - Gal21.1
Holding tank capacity - Galnot available
Holding tank capacity - Liters79.87
Holding tank capacity - Litersnot available
RiggingSloop
Riggingnot available
Mast ConfigurationKeel stepped mast
Mast Configurationnot available
Boat typeSail
Boat typeSail

Beneteau First 34.7 2005 vs Beneteau Oceanis 37.1 2023 — Common Questions

Which is the larger boat — the Beneteau First 34.7 2005 or the Beneteau Oceanis 37.1 2023?
The Beneteau Oceanis 37.1 2023 is the longer of the two at 39,2 feet overall. The Beneteau First 34.7 2005 comes in at 34,0 feet, making it roughly 5,2 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which boat can handle a bigger outboard?
The Beneteau Oceanis 37.1 2023 is rated to a maximum of 40 hp, giving it the larger power ceiling. The Beneteau First 34.7 2005 tops out at 21 hp. Keep in mind that maximum ratings are just that — matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.
How many people can each boat hold?
The Beneteau First 34.7 2005 is Coast Guard rated for 10 passengers, while the Beneteau Oceanis 37.1 2023 is certified for 11. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.
Which boat has the deeper draft — the Beneteau First 34.7 2005 or the Beneteau Oceanis 37.1 2023?
The Beneteau First 34.7 2005 has the deeper draft at 6,7 ft, versus 6,1 ft for the Beneteau Oceanis 37.1 2023. A deeper draft generally means better upwind performance and stability, but limits access to shallow anchorages and some marina berths. Always check the controlling depth of your home port and favourite cruising grounds before committing.
Which boat is better equipped for long-distance cruising?
For extended passages, fresh water capacity is a key indicator of cruising readiness. The Beneteau Oceanis 37.1 2023 carries 94 gallons of fresh water compared to 26 gallons on the Beneteau First 34.7 2005 — a meaningful advantage when watermaker installations or port stops aren't guaranteed.
Which boat is wider, and does it affect trailering?
The Beneteau Oceanis 37.1 2023 measures 145" wide, compared to 133" for the Beneteau First 34.7 2005. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.
Which boat has the larger fuel tank — the Beneteau First 34.7 2005 or the Beneteau Oceanis 37.1 2023?
The Beneteau Oceanis 37.1 2023 has the bigger tank at 34 gallons, versus 20 gallons on the Beneteau First 34.7 2005. That 14-gallon difference translates to roughly 42–71 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Beneteau First 34.7 2005 and Beneteau Oceanis 37.1 2023 from the same manufacturer?
Yes — both the Beneteau First 34.7 2005 and the Beneteau Oceanis 37.1 2023 are built by Beneteau. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.