Triton Boats SP 175 2005 vs Triton Boats TR-186 DC & SC 2008 - Boat Spec Comparison

Q: Which is the larger boat — the Triton Boats SP 175 2005 or the Triton Boats TR-186 DC & SC 2008?

The Triton Boats TR-186 DC & SC 2008 is the longer of the two at 18,0 feet overall. The Triton Boats SP 175 2005 comes in at 17,0 feet, making it roughly 1,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

Q: Which boat can handle a bigger outboard?

The Triton Boats TR-186 DC & SC 2008 is rated to a maximum of 150 hp, giving it the larger power ceiling. The Triton Boats SP 175 2005 tops out at 90 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.

Q: How many people can each boat hold?

The Triton Boats SP 175 2005 is Coast Guard rated for 4 passengers, while the Triton Boats TR-186 DC & SC 2008 is certified for 550. 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.

Q: Which boat is wider, and does it affect trailering?

The Triton Boats TR-186 DC & SC 2008 measures 91" wide, compared to 85" for the Triton Boats SP 175 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.

Q: Which boat has the larger fuel tank — the Triton Boats SP 175 2005 or the Triton Boats TR-186 DC & SC 2008?

The Triton Boats TR-186 DC & SC 2008 has the bigger tank at 36 gallons, versus 22 gallons on the Triton Boats SP 175 2005. That 14-gallon difference translates to roughly 42–70 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Triton Boats SP 175 2005 and Triton Boats TR-186 DC & SC 2008 from the same manufacturer?

Yes — both the Triton Boats SP 175 2005 and the Triton Boats TR-186 DC & SC 2008 are built by Triton Boats. 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.

Boat Comparison

Triton Boats SP 175 2005 vs Triton Boats TR-186 DC & SC 2008

Triton Boats

Triton Boats SP 175 2005

2005

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Triton Boats

Triton Boats TR-186 DC & SC 2008

2008

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Detailed Evaluation & Buyer Recommendation

Triton Boats SP 175 2005 vs Triton Boats TR-186 DC & SC 2008 — Same Brand, Different Boat

The Triton Boats SP 175 2005 vs Triton Boats TR-186 DC & SC 2008 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 150 hp, the Triton Boats TR-186 DC & SC 2008 has a 60-hp advantage over the Triton Boats SP 175 2005's 90-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Triton Boats TR-186 DC & SC 2008 carries 36 gallons versus 22 gallons in the Triton Boats SP 175 2005. 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 Triton Boats TR-186 DC & SC 2008 is rated for 550 passengers, while the Triton Boats SP 175 2005 caps at 4. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Triton Boats TR-186 DC & SC 2008 could be the deciding factor.

Bottom line: Choose the Triton Boats TR-186 DC & SC 2008 if your priority is putting more people on the water — it handles 550 passengers and at 18,0 ft it has the deck room to back that rating up comfortably. The Triton Boats SP 175 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 4 that costs less to run day-to-day.

General Boat Info

MakeTriton Boats

ModelSP 175

ModelTR-186 DC & SC

Model Year2005

Model Year2008

Measurements / Dimensions

Beam85 in

Beam91 in

Beam - Meters2.16

Beam - Meters2.31

Beam - Inches85

Beam - Inches91

Depth - DetailSide: 24 in

Depth - Detailnot available

Depth - Centimeters60.96

Depth - Centimetersnot available

Depth - Inches24

Depth - Inchesnot available

Weight - Detail1,154 lbs

Weight - Detailnot available

Weight - kg523.45

Weight - kgnot available

Weight - lbs.1154

Weight - lbs.not available

Height [transom]20 in

Height [transom]not available

Length - Feet17

Length - Feet18

Length - Inches2

Length - Inches6

Length overall - Detail17 ft. 2 in

Length overall - Detail18 ft. 6 in

Length overall - Meters5.23

Length overall - Meters5.64

Length overall - Inches206

Length overall - Inches222

Body / Hull

Hull thickness.1

Hull thicknessnot available

Hull materialnot available

Hull materialFiberglass

Hull typenot available

Hull typeModified Vee

Engine and Drivetrain

Fuel tank capacity - Detail22 gal

Fuel tank capacity - Detail36 gal

Fuel tank capacity - Liters83.28

Fuel tank capacity - Liters136.27

Fuel tank capacity - Gal22

Fuel tank capacity - Gal36

Engine max90 hp

Engine max150 hp

Fuel typenot available

Fuel typeGas

Drive typenot available

Drive typeOutboard

Operational Info

Maximum capacity1,200 lbs

Maximum capacitynot available

Maximum people4

Maximum people550 lbs

Storagenot available

StorageRear Storage Boxes: 168 qt. Front Storage Box: 300 qt

Trailer Info

Trailer - Length over allnot available

Trailer - Length over allw/ Swing Tongue: 20 ft. 0 in. w/o Swing Tongue: 22 ft. 0 in

Triton Boats SP 175 2005 vs Triton Boats TR-186 DC & SC 2008 — Common Questions

Which is the larger boat — the Triton Boats SP 175 2005 or the Triton Boats TR-186 DC & SC 2008?

The Triton Boats TR-186 DC & SC 2008 is the longer of the two at 18,0 feet overall. The Triton Boats SP 175 2005 comes in at 17,0 feet, making it roughly 1,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

Which boat can handle a bigger outboard?

The Triton Boats TR-186 DC & SC 2008 is rated to a maximum of 150 hp, giving it the larger power ceiling. The Triton Boats SP 175 2005 tops out at 90 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 Triton Boats SP 175 2005 is Coast Guard rated for 4 passengers, while the Triton Boats TR-186 DC & SC 2008 is certified for 550. 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 Triton Boats TR-186 DC & SC 2008 measures 91" wide, compared to 85" for the Triton Boats SP 175 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 Triton Boats SP 175 2005 or the Triton Boats TR-186 DC & SC 2008?

The Triton Boats TR-186 DC & SC 2008 has the bigger tank at 36 gallons, versus 22 gallons on the Triton Boats SP 175 2005. That 14-gallon difference translates to roughly 42–70 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Triton Boats SP 175 2005 and Triton Boats TR-186 DC & SC 2008 from the same manufacturer?

Yes — both the Triton Boats SP 175 2005 and the Triton Boats TR-186 DC & SC 2008 are built by Triton Boats. 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.

← Triton Boats SP 175 2005 full specs ← Triton Boats TR-186 DC & SC 2008 full specs