Sun Tracker Party Barge 21 2004 boat specs
Sun Tracker
Sun Tracker Party Barge 21 2004
2004
View full specs →
VS
Sun Tracker PARTY BARGE 27 I/O Regency Edition  2007 boat specs
Sun Tracker
Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007
2007
View full specs →

Sun Tracker Party Barge 21 2004 vs Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007 — Same Brand, Different Boat

The Sun Tracker Party Barge 21 2004 vs Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007 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 27 I/O Regency Edition 2007 measures 28,0 feet overall (2007), giving it roughly 7,0 additional feet of deck space compared to the Sun Tracker Party Barge 21 2004 at 21,0 feet (2004). Weight tells a clearer story for trailering families: the Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007 tips the scales at 3 452 lbs — 3 283 lbs less than the Sun Tracker Party Barge 21 2004 at 169 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 Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007 tops out at 135 hp. Engine specs for the Sun Tracker Party Barge 21 2004 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Sun Tracker Party Barge 21 2004 carries 26 gallons versus 3 gallons in the Sun Tracker PARTY BARGE 27 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 27 I/O Regency Edition 2007 is rated for 16 passengers, while the Sun Tracker Party Barge 21 2004 caps at 13. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007 could be the deciding factor.

The Sun Tracker PARTY BARGE 27 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 Barge 21 2004 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 27 I/O Regency Edition 2007 if your priority is putting more people on the water — it handles 16 passengers and at 28,0 ft it has the deck room to back that rating up comfortably. The Sun Tracker Party Barge 21 2004 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 13 that costs less to run day-to-day.
General Boat Info
MakeSun Tracker
MakeSun Tracker
ModelParty Barge 21
ModelParty Barge? 27 I/O Regency Edition
Model Year2004
Model Year2007
Measurements / Dimensions
Weight - Detail1,690 lbs
Weight - Detail3,452 lbs
Weight - kg766.57
Weight - kg1565.8
Weight - lbs.169
Weight - lbs.3452
Length - Feet21
Length - Feet28
Length - Inches5
Length - Inches5
Length overall - Detail21 ft. 5 in
Length overall - Detail28 ft. 5 in
Length overall - Meters6.53
Length overall - Meters8.66
Length overall - Inches257
Length overall - Inches341
Beamnot available
Beam8 ft. 6 in. (deck width)
Beam - Metersnot available
Beam - Meters2.59
Beam - Inchesnot available
Beam - Inches102
Pontoon and Inflatable Specific
Tube diameter24 in
Tube diameter26 in
Tube gauge.080 5052 Marine Alloy
Tube gauge0.080 5052 Marine Alloy
Number of tubesnot available
Number of tubes2
Engine and Drivetrain
Engine/s standard90 hp
Engine/s standardMerCruiser? 3.0 l 135 hp inline 4-cylinder w/ power steering
Fuel tank capacity - Detail26 gal
Fuel tank capacity - Detail30 gal
Fuel tank capacity - Liters98.42
Fuel tank capacity - Liters113.56
Fuel tank capacity - Gal26
Fuel tank capacity - Gal3
Drive typeOutBoard
Drive typeI/O
Fuel typenot available
Fuel typeGas
Engine maxnot available
Engine max135 hp
Operational Info
Maximum capacity1,800 lbs
Maximum capacity3,200 lbs
Maximum people13
Maximum people16 (2,260 lbs.)
Body / Hull
Hull materialnot available
Hull materialAluminum

Sun Tracker Party Barge 21 2004 vs Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007 — Common Questions

Which is the larger boat — the Sun Tracker Party Barge 21 2004 or the Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007?
The Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007 is the longer of the two at 28,0 feet overall. The Sun Tracker Party Barge 21 2004 comes in at 21,0 feet, making it roughly 7,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sun Tracker Party Barge 21 2004 or the Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007?
For trailering, the Sun Tracker Party Barge 21 2004 has the edge at 169 lbs dry weight versus 3 452 lbs for the Sun Tracker PARTY BARGE 27 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.
What is the maximum horsepower rating for these boats?
The Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007 has a documented max rating of 135 hp. Engine specifications for the Sun Tracker Party Barge 21 2004 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 Sun Tracker Party Barge 21 2004 is Coast Guard rated for 13 passengers, while the Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007 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 larger fuel tank — the Sun Tracker Party Barge 21 2004 or the Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007?
The Sun Tracker Party Barge 21 2004 has the bigger tank at 26 gallons, versus 3 gallons on the Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007. That 23-gallon difference translates to roughly 69–115 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sun Tracker Party Barge 21 2004 and Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007 from the same manufacturer?
Yes — both the Sun Tracker Party Barge 21 2004 and the Sun Tracker PARTY BARGE 27 I/O Regency Edition 2007 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.