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Tiara 3700 Open
(w/ 2 x 435-hp Caterpillar diesel inboards)

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Tiara 3700 Open
Tiara 3700 Open
The Tiara 3700 Open is a blend between a cruiser and a fishing machine. As a fish boat she has just about everything you will need when out on the tournament trail, and down below her accommodations are first rate.

Key Features

    As a fishing boat her padded cockpit has 72 square feet of fighting space and the deck is reinforced for a fighting chair. The bait-prep station comes complete with a sink, cutting board and tackle center built in. And along the transom there is a large fishbox and livewell built right into the sole. When it comes to getting to the engines you will have no problem with the Tiara 3700. With a push of the button the entire bridge deck opens to reveal a pair of Cat 3408DITAs, the heart of this boat. Down below she can sleep four and keep everyone happy with a galley complete with all the comforts of home. Contact: Tiara Yachts, 725 East 40th Street, Holland, MI 49423-5392 Phone: (616) 392-7163, www.tiarayachts.com.


Tiara 3700 Open Specifications
Length Overall 39' 8'' Dry Weight 21,800 lbs.
Beam 14' 2'' Tested Weight N/A
Draft 3' 11'' Weight Capacity N/A
Draft Up N/A Person Capacity N/A
Draft Down N/A Fuel Capacity 411 gal.
Air Draft N/A Water Capacity 98 gal.
Deadrise/Transom Length on Trailer N/A
Max Headroom 6'7 Height on Trailer N/A
Bridge Clearance n/a Trailer Weight N/A
Total Package Weight (Trailer,Boat & Engine) N/A
Prices, features, designs, and equipment are subject to change. Please see your local dealer or visit the builder's website for the latest information available on this boat model.

Engine Options

Tiara 3700 Open Engine options
Std. Power 2x385-hp Caterpillar 3126TA diesel inboards
Tested Power 2 x 435-hp Caterpillar diesel inboards
Opt. Power 2x435-hp CAT 3208 DITA or 2x450-hp Cummins 6CTA8.3 diesel inboards

Tiara 3700 Open Photo Gallery

Tiara 3700 Open Tiara 3700 open run.jpg Tiara 3700 Open Tiara3700-helm.jpg
She's a good-looking cruiser.

The 3700 Open has a lot of seating room with a double helm seat, an L-shaped lounge and two facing double bench seats in the cockpit. There’s also a wet bar with refrigerator and separate sink area w

Comfortable double helm bench seat.

The helm tilts away completely for easy access to wires and cables. It features complete instrumentation with extra room to mount additional electronics.

Tiara 3700 Open Tiara3700-cabin.jpg Tiara 3700 Open Tiara3700-galley.jpg
It’s four steps down into the salon.

The lounge/dinette area seats four to six comfortably for meals and an optional TV/VCR and upgraded stereo system with CD player is also available for entertainment purposes.

She offers good counter space to prepare meals.

The galley is to starboard and comes complete with an AC/DC refrigerator, two-burner cooktop, large stainless steel sink, good counter space, microwave oven, and built-in coffee maker.

Tiara 3700 Open Tiara3700-master.jpg
Spacious owner’s cabin.

The 3700 Open has sleeping accommodations for 4 with a queen size island berth in the owner’s stateroom and a large U-shape lounge that converts into a double berth.

Tiara 3700 Open Captain's Report

As a fishboat, the 3700 Open has just about everything you’ll need to compete on the tournament trail. With a good list of options the Tiara 3700 allows you to decide if you want a cruiser or fishing boat.

Perhaps the most impressive part of the boat is the way you reach the engines. Push a button, and the entire bridge deck rises to reveal the powerplants below.

The 3700 comes with a pair of Caterpillar 3408DITAs, and together they put out 870-horses of reliable diesel power. There’s plenty of room between them to perform routine maintenance, and the dipsticks and filters are inboard for easy access.

Up on the bridgedeck, the 3700 is classic Tiara, with an L-shaped lounge and nav station across from the helm to starboard.

With a big 14-foot beam, the 3700 showed good stability at any angle to the sea. We got a top-end speed of nearly 35 mph on the radar gun, and at best cruise she burned just 36 gallons per hour. That means you can travel about 300 miles on just one trip to the fuel dock.

The 3700 is surprisingly light to the touch, and she carves tight, fast turns at speed. She gets up on plane quickly for a boat her size, and once the turbos kick in around 1700 rpm, she’s moving to the fishing grounds or your next port of call.

For more information call (616) 392-7163 or visit www.tiarayachts.com.

Tiara 3700 Open Test Result Highlights

  • Top speed for the Tiara 3700 Open is 37.2 mph (59.9 kph), burning 44.0 gallons per hour (gph) or 166.54 liters per hour (lph).
  • Best cruise for the Tiara 3700 Open is 24.4 mph (39.3 kph), and the boat gets 1.10 miles per gallon (mpg) or 0.47 kilometers per liter (kpl), giving the boat a cruising range of 407 miles (655 kilometers).
  • Tested power is 2 x 435-hp Caterpillar diesel inboards.
For complete test results including fuel consumption, range and sound levels
go to our Test Results section.

Standard and Optional Equipment

Tiara 3700 Open Standard and Optional Equipment

Standard = Standard Optional = Optional

Tiara 3700 Open Warranty

Tiara 3700 Open Warranty Information
Warranties change from time to time. While BoatTEST.com has tried to ensure the most up-to-date warranty offered by each builder, it does not guarantee the accuracies of the information presented below. Please check with the boat builder or your local dealer before you buy any boat.
Hull Warranty
Years 5-Years
Transferable Yes
Deck Warranty
Years 5-Year
Transferable Yes
Engine Warranty
Years Engine warranties vary by manufacturer

Tiara 3700 Open Price

Tiara 3700 Open Price
Pricing Range $306,500.00
Prices, features, designs, and equipment are subject to change. Please see your local dealer or visit the builder's website for the latest information available on this boat model.

Test Results   (Printer Friendly Page)

Test Power: 2 x 435-hp Caterpillar diesel inboards
RPM MPH Knots Total GPH MPG NMPG Stat. Mile NM   KM    KPH    LPH    KPL   dBA
600 6.2 5.4 1.8 3.4 3.0 1274 1108 2050 10.00 6.81 1.46 71
1000 9.5 8.2 4.8 2.0 1.7 728 633 1172 15.30 18.17 0.84 74
1250 10.5 9.1 9.0 1.2 1.0 432 375 695 16.90 34.07 0.50 78
1500 11.4 9.9 14.6 0.8 0.7 289 251 465 18.30 55.27 0.33 81
1750 16.9 14.7 19.4 0.9 0.8 322 280 518 27.20 73.44 0.37 82
2000 24.4 21.2 22.2 1.1 1.0 407 354 655 39.30 84.04 0.47 84
2250 28.6 24.9 26.8 1.1 0.9 395 343 636 46.00 101.45 0.45 85
2500 31.6 27.4 33.0 1.0 0.8 354 308 570 50.90 124.92 0.41 86
2850 37.2 32.3 44.0 0.9 0.7 313 272 504 59.90 166.56 0.36 88

All fuel consumption numbers are the total for all engines in the boat. Speeds are measured with Stalker ProSports radar gun or GPS. Fuel consumption (gallons per hour) measured with Floscan digital fuel-flow meter or by on-board factory-installed diagnostic instruments. Range is based on 90% of published fuel capacity. Sound levels determined using Radio Shack digital decibel meter on A scale. 68 dBA is the level of normal conversation. Time to plane is measured from start of acceleration to formation of rooster tail behind boat.

Performance Chart

Performance Chart

Test Conditions

Test Power: 2 x 435-hp Caterpillar diesel inboards
Time To Plane n/a
0 to 30 n/a
Test Power 2 x 435-hp Caterpillar diesel inboards
Transmission Twin Disc
Ratio 1.77:1
Props 24x26
Load -fuel, -water, 4 persons on board, min. cruising gear
Climate Temp: 77F, Humid: 85%, Wind: 10-15 knots, Seas: 2-3 feet

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