Tiara Yachts 3100 Coronet 2012 boat specs
Tiara Yachts
Tiara Yachts 3100 Coronet 2012
2012
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VS
Tiara Yachts 4200 Open 2007 boat specs
Tiara Yachts
Tiara Yachts 4200 Open 2007
2007
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Tiara Yachts 3100 Coronet 2012 vs Tiara Yachts 4200 Open 2007 — Same Brand, Different Boat

The Tiara Yachts 3100 Coronet 2012 vs Tiara Yachts 4200 Open 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 Tiara Yachts 4200 Open 2007 measures 44,0 feet overall (2007), giving it roughly 10,9 additional feet of deck space compared to the Tiara Yachts 3100 Coronet 2012 at 33,1 feet (2012). Weight tells a clearer story for trailering families: the Tiara Yachts 3100 Coronet 2012 tips the scales at 1 355 lbs — 1 069 lbs more than the Tiara Yachts 4200 Open 2007 at 286 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 715 hp, the Tiara Yachts 4200 Open 2007 has a 340-hp advantage over the Tiara Yachts 3100 Coronet 2012's 375-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Tiara Yachts 4200 Open 2007 carries 52 gallons versus 21 gallons in the Tiara Yachts 3100 Coronet 2012. 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 Tiara Yachts 4200 Open 2007 is rated for 13 passengers, while the Tiara Yachts 3100 Coronet 2012 caps at 10. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Tiara Yachts 4200 Open 2007 could be the deciding factor.

Bottom line: Choose the Tiara Yachts 4200 Open 2007 if your priority is putting more people on the water — it handles 13 passengers and at 44,0 ft it has the deck room to back that rating up comfortably. The Tiara Yachts 3100 Coronet 2012 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 10 that costs less to run day-to-day.
General Boat Info
MakeTiara Yachts
MakeTiara Yachts
Model3100 Coronet
Model4200 Open
Model Year2012
Model Year2007
Measurements / Dimensions
Beam12 ft. 6 in. (3.81 m)
Beam14 ft. 11 in. (4.56 m)
Beam - Meters3.81
Beam - Meters4.55
Beam - Inches15
Beam - Inches179
Deadrise14℃
Deadrise17.5℃
Draft [max] - Detail2 ft. 8 in. (0.8 m) with props
Draft [max] - Detail4 ft. 2 in. (1.3 m) w/props
Draft [max] - Meters0.81
Draft [max] - Meters1.27
Draft [max] - Inches32
Draft [max] - Inches5
Weight - Detail13,550 lbs. (6,146 kg) gas
Weight - Detail28,600 lbs. (12,972.75 kg)
Weight - kg6146.17
Weight - kg12972.73
Weight - lbs.1355
Weight - lbs.286
Height - Detail8 ft. (2.44 m) waterline to top of standard arch
Height - Detailnot available
Height - Meters2.44
Height - Metersnot available
Height - Inches96
Height - Inchesnot available
Length - Feet33.08
Length - Feet44
Length [over all with swim platform]36 ft. 5 in. (11.1 m) with standard pulpit and standard 40 in. swim platform
Length [over all with swim platform]47 ft. 4 in. (14.43 m) w/standard pulpit and optional 30 in. swim platform
Length overall - Detail33 ft. 1 in. (10.08 m) with standard pulpit 30 ft. 6 in. (9.29 m) without standard pulpit
Length overall - Detail44 ft. 10 in. (13.66 m) w/standard pulpit 42 ft. 6 in. (12.95 m) w/out standard pulpit
Length overall - Meters10.08
Length overall - Meters13.67
Length overall - Inches397
Length overall - Inches538
Length - Metersnot available
Length - Meters13.66
Length - Inchesnot available
Length - Inches1
Body / Hull
Hull materialFiberglass
Hull materialnot available
Hull typeDeep Vee
Hull typenot available
Engine and Drivetrain
Fuel tank capacity - Detail210 gal. (794.9 l)
Fuel tank capacity - Detail520 gal. (1,968 l)
Fuel tank capacity - Liters794.94
Fuel tank capacity - Liters1968.41
Fuel tank capacity - Gal21
Fuel tank capacity - Gal52
Fuel typeGas or Diesel
Fuel typeDiesel
Drive typeInboard - Twin
Drive typeI/O
Engine maxTwin 375 hp
Engine max715 hp
Engine/s standardnot available
Engine/s standardTwin Cummins? QSM11 Diesels, 670 hp
Batterynot available
Battery12V two bank battery system with battery switches (4 engine batteries & 4 house batteries)
Operational Info
Headroom5 ft. 8 in. (1.73 m)
Headroomnot available
Sleeping capacity2
Sleeping capacity5
Water capacity33 gal. (124.92 l)
Water capacity130 gal. (493 l)
Holding tank capacity - Detail20 gal. (75.71 l)
Holding tank capacity - Detail50 gal. (189 l)
Holding tank capacity - Liters75.71
Holding tank capacity - Liters189.27
Holding tank capacity - Gal2
Holding tank capacity - Gal5
Headnot available
HeadCorian? vanity countertop and sink with storage below

Tiara Yachts 3100 Coronet 2012 vs Tiara Yachts 4200 Open 2007 — Common Questions

Which is the larger boat — the Tiara Yachts 3100 Coronet 2012 or the Tiara Yachts 4200 Open 2007?
The Tiara Yachts 4200 Open 2007 is the longer of the two at 44,0 feet overall. The Tiara Yachts 3100 Coronet 2012 comes in at 33,1 feet, making it roughly 10,9 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Tiara Yachts 3100 Coronet 2012 or the Tiara Yachts 4200 Open 2007?
For trailering, the Tiara Yachts 4200 Open 2007 has the edge at 286 lbs dry weight versus 1 355 lbs for the Tiara Yachts 3100 Coronet 2012. 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 Tiara Yachts 4200 Open 2007 is rated to a maximum of 715 hp, giving it the larger power ceiling. The Tiara Yachts 3100 Coronet 2012 tops out at 375 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 Tiara Yachts 3100 Coronet 2012 is Coast Guard rated for 10 passengers, while the Tiara Yachts 4200 Open 2007 is certified for 13. 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 Tiara Yachts 4200 Open 2007 measures 179" wide, compared to 15" for the Tiara Yachts 3100 Coronet 2012. 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 Tiara Yachts 3100 Coronet 2012 or the Tiara Yachts 4200 Open 2007?
The Tiara Yachts 4200 Open 2007 has the bigger tank at 52 gallons, versus 21 gallons on the Tiara Yachts 3100 Coronet 2012. That 31-gallon difference translates to roughly 93–155 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Tiara Yachts 3100 Coronet 2012 and Tiara Yachts 4200 Open 2007 from the same manufacturer?
Yes — both the Tiara Yachts 3100 Coronet 2012 and the Tiara Yachts 4200 Open 2007 are built by Tiara Yachts. 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.