South Bay 520FC TT I/O 2011 boat specs
South Bay
South Bay 520FC TT I/O 2011
2011
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VS
South Bay 925SL 2009 boat specs
South Bay
South Bay 925SL 2009
2009
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South Bay 520FC TT I/O 2011 vs South Bay 925SL 2009 — Which Pontoon Fits Your Needs?

When two boats share the same hull type — in this case both the South Bay 520FC TT I/O 2011 and the South Bay 925SL 2009 are pontoon designs with aluminum construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?

The South Bay 520FC TT I/O 2011 carries a rated maximum of 135 hp. Engine data for the South Bay 925SL 2009 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the South Bay 925SL 2009 carries 51 gallons versus 31 gallons in the South Bay 520FC TT I/O 2011. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

The South Bay 520FC TT I/O 2011 is rated for up to 13 people. Passenger data for the South Bay 925SL 2009 wasn't available.

Both are 2-tube and 3-tube pontoon designs respectively. Tube diameter and gauge affect stability and load capacity — more so than most buyers realize when comparing on paper.

Bottom line: The South Bay 925SL 2009 at 25,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The South Bay 520FC TT I/O 2011 at 21,4 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.
General Boat Info
MakeSouth Bay
MakeSouth Bay
Model520FC TT I/O
Model925SL
Model Year2011
Model Year2009
Measurements / Dimensions
Beam8 ft. 6 in
Beamnot available
Beam - Meters2.59
Beam - Metersnot available
Beam - Inches102
Beam - Inchesnot available
Weight - Detail2,340 lbs
Weight - Detailnot available
Weight - kg1061.41
Weight - kgnot available
Weight - lbs.234
Weight - lbs.not available
Length [deck]19 ft. 8 in
Length [deck]not available
Length - Feet21.42
Length - Feet25
Length overall - Detail21 ft. 5 in
Length overall - Detailnot available
Length overall - Meters6.53
Length overall - Metersnot available
Length overall - Inches257
Length overall - Inchesnot available
Body / Hull
Hull materialAluminum
Hull materialAluminum
Hull typePontoon
Hull typePontoon
Pontoon and Inflatable Specific
Tube diameter25 in
Tube diameternot available
Number of tubes2
Number of tubes3
Engine and Drivetrain
Fuel tank capacity - Detail31 gal
Fuel tank capacity - Detail51 gal
Fuel tank capacity - Liters117.35
Fuel tank capacity - Liters193.06
Fuel tank capacity - Gal31
Fuel tank capacity - Gal51
Fuel typeGas
Fuel typeGas
Drive typeI/O
Drive typeI/O
Engine max135 hp
Engine maxnot available
Operational Info
Maximum capacity2,590 lbs
Maximum capacitynot available
Maximum people13 / 1,895 lbs
Maximum peoplenot available
Water capacitynot available
Water capacity8 gal. fresh water with 12V pump

South Bay 520FC TT I/O 2011 vs South Bay 925SL 2009 — Common Questions

Which is the larger boat — the South Bay 520FC TT I/O 2011 or the South Bay 925SL 2009?
The South Bay 925SL 2009 is the longer of the two at 25,0 feet overall. The South Bay 520FC TT I/O 2011 comes in at 21,4 feet, making it roughly 3,6 ft shorter — a meaningful difference in deck room and overall on-water presence.
What is the maximum horsepower rating for these boats?
The South Bay 520FC TT I/O 2011 has a documented max rating of 135 hp. Engine specifications for the South Bay 925SL 2009 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.
How many passengers can the South Bay 520FC TT I/O 2011 carry?
The South Bay 520FC TT I/O 2011 has an official capacity rating of 13 people. Capacity data wasn't available for the other model in this comparison — verify directly with the dealer.
Which boat has the larger fuel tank — the South Bay 520FC TT I/O 2011 or the South Bay 925SL 2009?
The South Bay 925SL 2009 has the bigger tank at 51 gallons, versus 31 gallons on the South Bay 520FC TT I/O 2011. That 20-gallon difference translates to roughly 60–100 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the South Bay 520FC TT I/O 2011 and South Bay 925SL 2009 from the same manufacturer?
Yes — both the South Bay 520FC TT I/O 2011 and the South Bay 925SL 2009 are built by South Bay. 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.