Triton Boats SF-21 2006 vs Triton Boats TR-186 DC & SC 2008 - Boat Spec Comparison

Q: Which is the larger boat — the Triton Boats SF-21 2006 or the Triton Boats TR-186 DC & SC 2008?

The Triton Boats SF-21 2006 is the longer of the two at 21,0 feet overall. The Triton Boats TR-186 DC & SC 2008 comes in at 18,0 feet, making it roughly 3,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

Q: Which boat can handle a bigger outboard?

The Triton Boats SF-21 2006 is rated to a maximum of 225 hp, giving it the larger power ceiling. The Triton Boats TR-186 DC & SC 2008 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.

Q: How many people can each boat hold?

The Triton Boats SF-21 2006 is Coast Guard rated for 6 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 SF-21 2006 measures 94" wide, compared to 91" for the Triton Boats TR-186 DC & SC 2008. 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 SF-21 2006 or the Triton Boats TR-186 DC & SC 2008?

The Triton Boats SF-21 2006 has the bigger tank at 42 gallons, versus 36 gallons on the Triton Boats TR-186 DC & SC 2008. That 6-gallon difference translates to roughly 18–30 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Triton Boats SF-21 2006 and Triton Boats TR-186 DC & SC 2008 from the same manufacturer?

Yes — both the Triton Boats SF-21 2006 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 SF-21 2006 vs Triton Boats TR-186 DC & SC 2008

Triton Boats

Triton Boats SF-21 2006

2006

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Triton Boats

Triton Boats TR-186 DC & SC 2008

2008

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Detailed Evaluation & Buyer Recommendation

Triton Boats SF-21 2006 vs Triton Boats TR-186 DC & SC 2008 — Same Brand, Different Boat

The Triton Boats SF-21 2006 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 225 hp, the Triton Boats SF-21 2006 has a 75-hp advantage over the Triton Boats TR-186 DC & SC 2008's 150-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 SF-21 2006 carries 42 gallons versus 36 gallons in the Triton Boats TR-186 DC & SC 2008. 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 SF-21 2006 caps at 6. 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 SF-21 2006 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

MakeTriton Boats

ModelSF-21

ModelTR-186 DC & SC

Model Year2006

Model Year2008

Measurements / Dimensions

Beam94 in

Beam91 in

Beam - Meters2.39

Beam - Meters2.31

Beam - Inches94

Beam - Inches91

Weight - Detail1,990 lbs

Weight - Detailnot available

Weight - kg902.65

Weight - kgnot available

Weight - lbs.199

Weight - lbs.not available

Length - Feet21

Length - Feet18

Length overall - Detail21 ft. 0 in

Length overall - Detail18 ft. 6 in

Length overall - Meters6.4

Length overall - Meters5.64

Length overall - Inches252

Length overall - Inches222

Length - Inchesnot available

Length - Inches6

Engine and Drivetrain

Fuel tank capacity - Detail42 gal

Fuel tank capacity - Detail36 gal

Fuel tank capacity - Liters158.99

Fuel tank capacity - Liters136.27

Fuel tank capacity - Gal42

Fuel tank capacity - Gal36

Drive typeOutboard

Engine max225 hp

Engine max150 hp

Fuel typenot available

Fuel typeGas

Operational Info

Maximum capacity1,030 lbs

Maximum capacitynot available

Storagenot available

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

Maximum peoplenot available

Maximum people550 lbs

Body / Hull

Hull materialnot available

Hull materialFiberglass

Hull typenot available

Hull typeModified Vee

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 SF-21 2006 vs Triton Boats TR-186 DC & SC 2008 — Common Questions

Which is the larger boat — the Triton Boats SF-21 2006 or the Triton Boats TR-186 DC & SC 2008?

The Triton Boats SF-21 2006 is the longer of the two at 21,0 feet overall. The Triton Boats TR-186 DC & SC 2008 comes in at 18,0 feet, making it roughly 3,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

Which boat can handle a bigger outboard?

The Triton Boats SF-21 2006 is rated to a maximum of 225 hp, giving it the larger power ceiling. The Triton Boats TR-186 DC & SC 2008 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 Triton Boats SF-21 2006 is Coast Guard rated for 6 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 SF-21 2006 measures 94" wide, compared to 91" for the Triton Boats TR-186 DC & SC 2008. 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 SF-21 2006 or the Triton Boats TR-186 DC & SC 2008?

The Triton Boats SF-21 2006 has the bigger tank at 42 gallons, versus 36 gallons on the Triton Boats TR-186 DC & SC 2008. That 6-gallon difference translates to roughly 18–30 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Triton Boats SF-21 2006 and Triton Boats TR-186 DC & SC 2008 from the same manufacturer?

Yes — both the Triton Boats SF-21 2006 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 SF-21 2006 full specs ← Triton Boats TR-186 DC & SC 2008 full specs