Sun Tracker Party Barge 25 I/O Regency Edition 2007 boat specs
Sun Tracker
Sun Tracker Party Barge 25 I/O Regency Edition 2007
2007
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Sun Tracker Party Deck 21 I/O 2005 boat specs
Sun Tracker
Sun Tracker Party Deck 21 I/O 2005
2005
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Sun Tracker Party Barge 25 I/O Regency Edition 2007 vs Sun Tracker Party Deck 21 I/O 2005 — Same Brand, Different Boat

The Sun Tracker Party Barge 25 I/O Regency Edition 2007 vs Sun Tracker Party Deck 21 I/O 2005 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.

Size is the most obvious dividing line here. The Sun Tracker Party Barge 25 I/O Regency Edition 2007 measures 26,0 feet overall (2007), giving it roughly 24,0 additional feet of deck space compared to the Sun Tracker Party Deck 21 I/O 2005 at 2,0 feet (2005). Weight tells a clearer story for trailering families: the Sun Tracker Party Barge 25 I/O Regency Edition 2007 tips the scales at 3 133 lbs — 2 908 lbs more than the Sun Tracker Party Deck 21 I/O 2005 at 225 lbs. That difference is meaningful if you're working within a half-ton or three-quarter-ton truck's tow rating, especially once you factor in a motor, gear, and fuel.

The power gap is worth calling out. Rated to 220 hp, the Sun Tracker Party Deck 21 I/O 2005 has a 85-hp advantage over the Sun Tracker Party Barge 25 I/O Regency Edition 2007's 135-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sun Tracker Party Deck 21 I/O 2005 carries 41 gallons versus 3 gallons in the Sun Tracker Party Barge 25 I/O Regency Edition 2007. 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 Sun Tracker Party Barge 25 I/O Regency Edition 2007 is rated for 13 passengers, while the Sun Tracker Party Deck 21 I/O 2005 caps at 1. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sun Tracker Party Barge 25 I/O Regency Edition 2007 could be the deciding factor.

At this size, power-to-weight ratio matters more than outright horsepower. The Sun Tracker Party Deck 21 I/O 2005 comes in at 1 lbs per hp versus 23 lbs per hp for the Sun Tracker Party Barge 25 I/O Regency Edition 2007. The lower the ratio the more explosive the acceleration — meaningful on a short RIB where bursts of speed, quick planing, and agility in surf or tight waterways define the experience.

The Sun Tracker Party Barge 25 I/O Regency Edition 2007 is an inflatable design — lighter, easier to store, and quicker to launch from a beach or dock without a slipway. The Sun Tracker Party Deck 21 I/O 2005 is a rigid hull, which typically offers a more confident ride in chop and easier maintenance over the long term.

Bottom line: Choose the Sun Tracker Party Barge 25 I/O Regency Edition 2007 if your priority is putting more people on the water — it handles 13 passengers and at 26,0 ft it has the deck room to back that rating up comfortably. The Sun Tracker Party Deck 21 I/O 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 1 that costs less to run day-to-day.
General Boat Info
MakeSun Tracker
MakeSun Tracker
ModelParty Barge? 25 I/O Regency Edition
ModelParty Deck 21 I/O
Model Year2007
Model Year2005
Measurements / Dimensions
Beam8 ft. 6 in. (deck width)
Beam101 in
Beam - Meters2.59
Beam - Meters2.57
Beam - Inches102
Beam - Inches101
Weight - Detail3,133 lbs
Weight - Detail2,250 lbs
Weight - kg1421.1
Weight - kg1020.58
Weight - lbs.3133
Weight - lbs.225
Length - Feet26
Length - Feet2
Length - Inches4
Length - Inches7
Length overall - Detail26 ft. 4 in
Length overall - Detail20 ft. 7 in
Length overall - Meters8.03
Length overall - Meters6.27
Length overall - Inches316
Length overall - Inches247
Body / Hull
Hull materialAluminum
Hull materialAluminum
Pontoon and Inflatable Specific
Tube diameter26 in
Tube diameternot available
Tube gauge0.080 5052 Marine Alloy
Tube gaugenot available
Number of tubes2
Number of tubesnot available
Engine and Drivetrain
Engine/s standardMerCruiser? 3.0 l 135 hp inline 4-cylinder w/ power steering
Engine/s standardMerCruiser? 3.0L 135 HP Inline 4-Cylinder w/ Power Steering
Fuel tank capacity - Detail30 gal
Fuel tank capacity - Detail41 gal
Fuel tank capacity - Liters113.56
Fuel tank capacity - Liters155.2
Fuel tank capacity - Gal3
Fuel tank capacity - Gal41
Fuel typeGas
Fuel typenot available
Drive typeI/O
Drive typeI/O
Engine max135 hp
Engine max220 hp
Operational Info
Maximum capacity3,000 lbs
Maximum capacity2,045 lbs
Maximum people13 (1,800 lbs.)
Maximum people1

Sun Tracker Party Barge 25 I/O Regency Edition 2007 vs Sun Tracker Party Deck 21 I/O 2005 — Common Questions

Which is the larger boat — the Sun Tracker Party Barge 25 I/O Regency Edition 2007 or the Sun Tracker Party Deck 21 I/O 2005?
The Sun Tracker Party Barge 25 I/O Regency Edition 2007 is the longer of the two at 26,0 feet overall. The Sun Tracker Party Deck 21 I/O 2005 comes in at 2,0 feet, making it roughly 24,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sun Tracker Party Barge 25 I/O Regency Edition 2007 or the Sun Tracker Party Deck 21 I/O 2005?
For trailering, the Sun Tracker Party Deck 21 I/O 2005 has the edge at 225 lbs dry weight versus 3 133 lbs for the Sun Tracker Party Barge 25 I/O Regency Edition 2007. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
Which boat can handle a bigger outboard?
The Sun Tracker Party Deck 21 I/O 2005 is rated to a maximum of 220 hp, giving it the larger power ceiling. The Sun Tracker Party Barge 25 I/O Regency Edition 2007 tops out at 135 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 Sun Tracker Party Barge 25 I/O Regency Edition 2007 is Coast Guard rated for 13 passengers, while the Sun Tracker Party Deck 21 I/O 2005 is certified for 1. 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 is wider, and does it affect trailering?
The Sun Tracker Party Barge 25 I/O Regency Edition 2007 measures 102" wide, compared to 101" for the Sun Tracker Party Deck 21 I/O 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 Sun Tracker Party Barge 25 I/O Regency Edition 2007 or the Sun Tracker Party Deck 21 I/O 2005?
The Sun Tracker Party Deck 21 I/O 2005 has the bigger tank at 41 gallons, versus 3 gallons on the Sun Tracker Party Barge 25 I/O Regency Edition 2007. That 38-gallon difference translates to roughly 114–190 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sun Tracker Party Barge 25 I/O Regency Edition 2007 and Sun Tracker Party Deck 21 I/O 2005 from the same manufacturer?
Yes — both the Sun Tracker Party Barge 25 I/O Regency Edition 2007 and the Sun Tracker Party Deck 21 I/O 2005 are built by Sun Tracker. 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.