Triton Boats 1870 Bay Sport 2005 boat specs
Triton Boats
Triton Boats 1870 Bay Sport 2005
2005
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VS
Triton Boats TS-18 2011 boat specs
Triton Boats
Triton Boats TS-18 2011
2011
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Triton Boats 1870 Bay Sport 2005 vs Triton Boats TS-18 2011 — Same Brand, Different Boat

The Triton Boats 1870 Bay Sport 2005 vs Triton Boats TS-18 2011 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.

On paper these two are close siblings in the size department — Triton Boats 1870 Bay Sport 2005 at 18,0 ft versus Triton Boats TS-18 2011 at 18,2 ft. Weight tells a clearer story for trailering families: the Triton Boats 1870 Bay Sport 2005 tips the scales at 1 186 lbs — 1 080 lbs more than the Triton Boats TS-18 2011 at 106 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 115 hp, the Triton Boats 1870 Bay Sport 2005 has a 40-hp advantage over the Triton Boats TS-18 2011's 75-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 TS-18 2011 carries 19 gallons versus 3 gallons in the Triton Boats 1870 Bay Sport 2005. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

Both boats are rated for 4 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

Bottom line: Performance buyers should lean toward the Triton Boats 1870 Bay Sport 2005 and its 115-hp ceiling. If fuel economy and quieter running matter more than top-end speed, the Triton Boats TS-18 2011 with its 75-hp rating is the more economical daily driver.
General Boat Info
MakeTriton Boats
MakeTriton Boats
Model1870 Bay Sport
ModelTS-18
Model Year2005
Model Year2011
Measurements / Dimensions
Beam98 in
Beam85 in
Beam - Meters2.49
Beam - Meters2.16
Beam - Inches98
Beam - Inches85
Depth - DetailSide: 27 in
Depth - Detail24 in
Depth - Centimeters68.58
Depth - Centimeters60.96
Depth - Inches27
Depth - Inches24
Weight - Detail1,186 lbs
Weight - Detail1,060 lbs
Weight - kg537.96
Weight - kg480.81
Weight - lbs.1186
Weight - lbs.106
Height [transom]20 in
Height [transom]20 in
Length - Feet18
Length - Feet18.17
Length overall - Detail18 ft. 0 in
Length overall - Detail18 ft. 2 in
Length overall - Meters5.49
Length overall - Meters5.54
Length overall - Inches216
Length overall - Inches218
Width [transom] - Detailnot available
Width [transom] - Detail60 in. bottom
Body / Hull
Hull thickness.125
Hull thickness0.100 in
Hull materialnot available
Hull materialAluminum
Hull typenot available
Hull typeModified Vee
Engine and Drivetrain
Fuel tank capacity - Detail30 gal
Fuel tank capacity - Detail19 gal
Fuel tank capacity - Liters113.56
Fuel tank capacity - Liters71.92
Fuel tank capacity - Gal3
Fuel tank capacity - Gal19
Engine max115 hp
Engine maxnot available
Fuel typenot available
Fuel typeGas
Drive typenot available
Drive typeOutboard
Horsepowernot available
Horsepower75 - 115 hp
Operational Info
Maximum capacity1,100 lbs
Maximum capacitynot available
Maximum people4
Maximum people4 / 600 lbs

Triton Boats 1870 Bay Sport 2005 vs Triton Boats TS-18 2011 — Common Questions

Which is the larger boat — the Triton Boats 1870 Bay Sport 2005 or the Triton Boats TS-18 2011?
The Triton Boats TS-18 2011 is the longer of the two at 18,2 feet overall. The Triton Boats 1870 Bay Sport 2005 comes in at 18,0 feet, making it roughly 0,2 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Triton Boats 1870 Bay Sport 2005 or the Triton Boats TS-18 2011?
For trailering, the Triton Boats TS-18 2011 has the edge at 106 lbs dry weight versus 1 186 lbs for the Triton Boats 1870 Bay Sport 2005. 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 Triton Boats 1870 Bay Sport 2005 is rated to a maximum of 115 hp, giving it the larger power ceiling. The Triton Boats TS-18 2011 tops out at 75 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 1870 Bay Sport 2005 is Coast Guard rated for 4 passengers, while the Triton Boats TS-18 2011 is certified for 4. 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 1870 Bay Sport 2005 measures 98" wide, compared to 85" for the Triton Boats TS-18 2011. 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 1870 Bay Sport 2005 or the Triton Boats TS-18 2011?
The Triton Boats TS-18 2011 has the bigger tank at 19 gallons, versus 3 gallons on the Triton Boats 1870 Bay Sport 2005. That 16-gallon difference translates to roughly 48–80 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Triton Boats 1870 Bay Sport 2005 and Triton Boats TS-18 2011 from the same manufacturer?
Yes — both the Triton Boats 1870 Bay Sport 2005 and the Triton Boats TS-18 2011 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.