You leave the dock at eight with coffee still hot in the cupholder. By quarter past nine you are anchored forty miles offshore, the doors are open, the terrace is down, and nobody had to be hired to make any of it happen.
That is the Tiara 46 LS doing the job it was drawn for. It is an outboard boat at 46'6" that refuses to become an express cruiser: the cockpit stays the main room, the galley stays out there with it, and glass doors close the whole thing off when the weather asks them to.
Who It's For
The 46 LS is built for the owner-operator who runs long days and wants sleeping aboard as an option rather than the thing the boat is designed around. You have probably owned a 38 or a 42. You are tired of choosing between a boat that is good at the day and a boat that is good at the night.
You do not want a flybridge because you actually drive. You do not want inboards because you would rather service engines at the transom. And you have no interest in a captain on a 46-footer.
This is not a first cruiser. The helm assumes you know what trim does and why rpm matters more than throttle position.
Design and Layout: The Cockpit Is the Room
Three aft cockpit modules let the back of the boat be set up for entertaining, for adventure or for plain relaxation. That choice is made at order, and it defines the aft third of the boat.
What is common to all three is the enclosure. Sliding glass doors close the cockpit off when the weather turns - the move that separates this boat from an open dayboat - and the portside terrace opens it to the water when it does not. Between those two states you have most of the range of a boat ten feet longer without the volume penalty.
The galley sits mid-cockpit rather than below, with expanded prep space and pantry amenities. It is a small architectural decision with a large practical effect: the person making lunch is in the room, not in a basement.
Below deck the 46 LS has a forward berth, a mid-cabin stateroom and a well-appointed head. Two cabins rather than three, which is a deliberate choice at this length and the reason the deck feels the way it does.
Performance: The Cruise Band Earns the Range
Triple Mercury 600 V12 Verados, with joystick piloting, twin Garmin touchscreens and EmpirBus digital switching at the helm.
Tiara tested the boat on the St. Lucie River off Stuart, Florida, at 35,187 lbs as tested - four people, 800 lbs of gear, full tanks and the optional gyro fitted. Wide open throttle was 59.0 mph at 6,245 rpm on 148.6 gallons per hour. Idle to 30 mph took 9.08 seconds.
The two optimum cruise settings are where the boat lives. 41.1 mph at 4,500 rpm on 74.0 gph, worth 333 statute miles. 47.1 mph at 5,000 rpm on 83.9 gph, worth 336. Both are calculated on 90 percent of the tank.
Put the burn figures side by side and the picture is clear: 74 to 84 gallons an hour in the cruise band against 148.6 wide open. Triple 600s are not there so you can run at the top of the tachometer. They are there so the boat cruises in the mid-forties with the doors shut and the ride flat, in conditions where a lighter hull would be working.
The transom carries 21 degrees of deadrise and the boat draws 4'3" - a deeper foot than the 43 LS, and part of why it settles the way it does at speed.
What to Settle Before You Order
Confirm the fuel capacity on the build sheet. Tiara's specification block gives 660 gallons; the performance report header for the same hull says 665. It is a five-gallon question, but it is your range calculation.
Pick the aft module deliberately - entertaining, adventure or relaxation - because that is ordered rather than swapped.
Then run the boat at your intended cruise rpm with the doors both open and shut, and get observed burn in writing. Work your own range off the tank size you confirmed.
Where to Start
The 46 LS sits between the 43 LS and the 56 LS in Tiara's Luxury Sport line, stepping from the 43's twin engines to triples and from 400 gallons to 660.
If 43 feet and twin engines cover your run, the 43 LS does the same job on a smaller tank and a smaller bill. If you want two staterooms with private heads and a salon above them, the 48 LE is the Luxury Express answer at a similar length. The 46 LS is for the owner who wants the cockpit to stay the main room and wants a door on it.
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