Nitro 188 Sport 2004 boat specs
Nitro
Nitro 188 Sport 2004
2004
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VS
Nitro Z-7 Sport 2012 boat specs
Nitro
Nitro Z-7 Sport 2012
2012
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Nitro 188 Sport 2004 vs Nitro Z-7 Sport 2012 — Same Brand, Different Boat

The Nitro 188 Sport 2004 vs Nitro Z-7 Sport 2012 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 power gap is worth calling out. Rated to 175 hp, the Nitro 188 Sport 2004 has a 25-hp advantage over the Nitro Z-7 Sport 2012's 150-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 31 gal and 28 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Nitro 188 Sport 2004 is rated for 7 passengers, while the Nitro Z-7 Sport 2012 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Nitro 188 Sport 2004 could be the deciding factor.

Bottom line: Choose the Nitro 188 Sport 2004 if your priority is putting more people on the water — it handles 7 passengers and at 0,0 ft it has the deck room to back that rating up comfortably. The Nitro Z-7 Sport 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.
General Boat Info
MakeNitro
MakeNitro
Model188 Sport
ModelZ-7 Sport
Model Year2004
Model Year2012
Measurements / Dimensions
Beam93 in
Beam93 in
Beam - Meters2.36
Beam - Meters2.36
Beam - Inches93
Beam - Inches93
Weight - Detail1675 lbs
Weight - Detail1,675 lbs
Weight - kg759.77
Weight - kg759.77
Weight - lbs.1675
Weight - lbs.1675
Height [transom]22 in
Height [transom]22 in
Length overall - Detail18 ft. 1 in
Length overall - Detail19 ft. 5 in
Length overall - Meters5.51
Length overall - Meters5.92
Length overall - Inches217
Length overall - Inches233
Deadrisenot available
Deadrise16℃
Draft [max] - Detailnot available
Draft [max] - Detail15 in
Draft [max] - Metersnot available
Draft [max] - Meters0.38
Draft [max] - Inchesnot available
Draft [max] - Inches15
Length - Feetnot available
Length - Feet19.42
Engine and Drivetrain
Fuel tank capacity - Detail31 Gallons
Fuel tank capacity - Detail28 gal
Fuel tank capacity - Liters117.35
Fuel tank capacity - Liters105.99
Fuel tank capacity - Gal31
Fuel tank capacity - Gal28
Engine max175 hp
Engine max150 hp
Engine makenot available
Engine makeMercury®
Engine modelnot available
Engine model115 ELPT OptiMax®
Fuel typenot available
Fuel typeGas
Drive typenot available
Drive typeOutboard
Operational Info
Maximum capacity1570 lbs
Maximum capacity1,500 lbs
Maximum people7
Maximum people6 / 750 lbs
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeModified Vee
Trailer Info
Trailer - Detailnot available
Trailer - DetailNITRO? color coordinated single axle drive-on
Trailer - Length over allnot available
Trailer - Length over allWith Swing-away: 20 ft. 4 in
Trailer - Weightnot available
Trailer - Weight3,236 lbs
Trailer - Widthnot available
Trailer - Width8 ft. 3 in

Nitro 188 Sport 2004 vs Nitro Z-7 Sport 2012 — Common Questions

Which is easier to trailer — the Nitro 188 Sport 2004 or the Nitro Z-7 Sport 2012?
For trailering, the Nitro Z-7 Sport 2012 has the edge at 1 675 lbs dry weight versus 1 675 lbs for the Nitro 188 Sport 2004. 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 Nitro 188 Sport 2004 is rated to a maximum of 175 hp, giving it the larger power ceiling. The Nitro Z-7 Sport 2012 tops out at 150 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 Nitro 188 Sport 2004 is Coast Guard rated for 7 passengers, while the Nitro Z-7 Sport 2012 is certified for 6. 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.
Do these boats require an oversize trailer permit to tow on US highways?
Both the Nitro 188 Sport 2004 and Nitro Z-7 Sport 2012 share an 93 in beam — meaning both sit right at the 8’6" threshold that most US states use for standard-width loads. In most states you can tow at that width without a special permit, but regulations vary. Always check the rules for your state and any states you'll be passing through before your first long haul.
Which boat has the larger fuel tank — the Nitro 188 Sport 2004 or the Nitro Z-7 Sport 2012?
The Nitro 188 Sport 2004 has the bigger tank at 31 gallons, versus 28 gallons on the Nitro Z-7 Sport 2012. That 3-gallon difference translates to roughly 9–15 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Nitro 188 Sport 2004 and Nitro Z-7 Sport 2012 from the same manufacturer?
Yes — both the Nitro 188 Sport 2004 and the Nitro Z-7 Sport 2012 are built by Nitro. 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.