Beneteau Idylle 11.50 Fin keel 1983 boat specs
Beneteau
Beneteau Idylle 11.50 Fin keel 1983
1983
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VS
Beneteau Swift Trawler 52 2009 boat specs
Beneteau
Beneteau Swift Trawler 52 2009
2009
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Beneteau Idylle 11.50 Fin keel 1983 vs Beneteau Swift Trawler 52 2009 — Same Brand, Different Boat

The Beneteau Idylle 11.50 Fin keel 1983 vs Beneteau Swift Trawler 52 2009 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.

The Beneteau Idylle 11.50 Fin keel 1983 carries a rated maximum of 50 hp. Engine data for the Beneteau Swift Trawler 52 2009 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Beneteau Swift Trawler 52 2009 carries 1 057 gallons versus 21 gallons in the Beneteau Idylle 11.50 Fin keel 1983. 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 Swift Trawler 52 2009 is rated for 16 passengers, while the Beneteau Idylle 11.50 Fin keel 1983 caps at 11. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Beneteau Swift Trawler 52 2009 could be the deciding factor.

The Beneteau Idylle 11.50 Fin keel 1983 has a documented displacement of 11 464 lbs. Displacement data wasn't available for the other boat in this comparison.

Both boats draw a similar depth — 4,5 ft and 4,0 ft respectively. Marina access and anchorage options should be broadly equivalent between the two.

The Beneteau Idylle 11.50 Fin keel 1983 uses Sloop rigging. The Beneteau Idylle 11.50 Fin keel 1983 has a documented auxiliary engine of 50 hp.

For extended cruising, water capacity matters: the Beneteau Swift Trawler 52 2009 carries 264 gallons versus 106 gallons on the Beneteau Idylle 11.50 Fin keel 1983 — a significant advantage on longer passages where watermaker or provisioning stops aren't guaranteed.

Bottom line: The Beneteau Swift Trawler 52 2009 at 55,8 ft offers more living space, greater range, and a more substantial offshore capability. The Beneteau Idylle 11.50 Fin keel 1983 at 37,8 ft is the easier, lower-cost option — simpler to crew and a strong choice for coastal and day sailing.
Measurements / Dimensions
Length overall - Detail37.80 ft
Length overall - Detail55 ft. 9 in
Length - Feet37.8
Length - Feet55.75
Length overall - Meters11.52
Length overall - Meters16.99
Length overall - Inches454
Length overall - Inches669
Beam12.10 ft
Beam16 ft. 2 in
Beam - Meters3.69
Beam - Meters4.93
Beam - Inches145
Beam - Inches194
Draft [max] - Detail4.50 ft
Draft [max] - Detail4 ft. 3 in
Draft [max] - Meters1.37
Draft [max] - Meters1.3
Draft [max] - Inches54
Draft [max] - Inches51
Displacement11464.00 lbs
Displacementnot available
Length [at waterline]not available
Length [at waterline]37 ft. 5 in
Body / Hull
Rudder1 rudder on skeg
Ruddernot available
Helm1 wheel
Helmnot available
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Gal21.1
Fuel tank capacity - Gal1057
Fuel tank capacity - Liters79.87
Fuel tank capacity - Liters4001.18
Horsepower50 hp
Horsepowernot available
Fuel typeDiesel
Fuel typeGas
Drive typeinboard
Drive typeInboard - Twin
Engine/s standardnot available
Engine/s standard(2) 575 hp (2 @ 423 kW)
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail1,057 gal
Performance
Maximum speed7.2
Maximum speednot available
Maximum speed measureknots
Maximum speed measurenot available
Operational Info
Sleeping capacity6
Sleeping capacitynot available
Cabins2
Cabinsnot available
Head1
Headnot available
Water capacity105.7
Water capacity264 gal
RiggingSloop
Riggingnot available
Mast ConfigurationDeck stepped mast
Mast Configurationnot available
Boat typeSail
Boat typenot available
General Boat Info
Makenot available
MakeBeneteau
Modelnot available
ModelSwift Trawler 52
Model Yearnot available
Model Year2009

Beneteau Idylle 11.50 Fin keel 1983 vs Beneteau Swift Trawler 52 2009 — Common Questions

Which is the larger boat — the Beneteau Idylle 11.50 Fin keel 1983 or the Beneteau Swift Trawler 52 2009?
The Beneteau Swift Trawler 52 2009 is the longer of the two at 55,8 feet overall. The Beneteau Idylle 11.50 Fin keel 1983 comes in at 37,8 feet, making it roughly 18,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
What is the maximum horsepower rating for these boats?
The Beneteau Idylle 11.50 Fin keel 1983 has a documented max rating of 50 hp. Engine specifications for the Beneteau Swift Trawler 52 2009 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.
How many people can each boat hold?
The Beneteau Idylle 11.50 Fin keel 1983 is Coast Guard rated for 11 passengers, while the Beneteau Swift Trawler 52 2009 is certified for 16. 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 Idylle 11.50 Fin keel 1983 or the Beneteau Swift Trawler 52 2009?
The Beneteau Idylle 11.50 Fin keel 1983 has the deeper draft at 4,5 ft, versus 4,0 ft for the Beneteau Swift Trawler 52 2009. 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 Swift Trawler 52 2009 carries 264 gallons of fresh water compared to 106 gallons on the Beneteau Idylle 11.50 Fin keel 1983 — a meaningful advantage when watermaker installations or port stops aren't guaranteed.
Which boat is wider, and does it affect trailering?
The Beneteau Swift Trawler 52 2009 measures 194" wide, compared to 145" for the Beneteau Idylle 11.50 Fin keel 1983. 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 Idylle 11.50 Fin keel 1983 or the Beneteau Swift Trawler 52 2009?
The Beneteau Swift Trawler 52 2009 has the bigger tank at 1 057 gallons, versus 21 gallons on the Beneteau Idylle 11.50 Fin keel 1983. That 1035-gallon difference translates to roughly 3107–5179 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Beneteau Idylle 11.50 Fin keel 1983 and Beneteau Swift Trawler 52 2009 from the same manufacturer?
Yes — both the Beneteau Idylle 11.50 Fin keel 1983 and the Beneteau Swift Trawler 52 2009 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.