2025 Viaggio Diamante 22S AT

The Diamante 22S AT melds new tech, beaucoup features and a plush interior with a traditional approach.

Viaggio’s premium Diamante 22S AT melds new tech, beaucoup features and a plush interior with a traditional approach. With a Suzuki 300, it roars to 30 mph in 6.9 seconds, with a top speed of 46 mph at 6,000 rpm. Fuel mileage? The Diamante’s most economical cruising speed comes at 23.5 mph, where it scores 2.9 mpg for a 153-mile range—or a weekend without refueling.

Viaggio Diamante 22S AT out on the water
The Diamante offers solid sure-footedness in afternoon lake chop and when crossing large wakes. Bill Doster

The Diamante employs an optional triple 27-inch-diameter pontoon tube setup, with spray rails on the outside tubes and lifting strakes on all three. A spray shield underneath keeps the water flowing smoothly. The performance package comes with SeaStar power steering. The Diamante takes full advantage, giving ­solid sure-footedness in afternoon lake chop and when crossing large wakes, as well as carving clean turns with a slight banking.

Viaggio Diamante 22S AT helm
A Simrad NSX9 display combines with Viaggio’s electronic digital gauges to monitor the engine performance and boat functions. Bill Doster

Viaggio upgraded its belowdecks superstructures last year. Thicker aluminum is used in tubes and splash guards, and heavier full C-channel crossmembers connect the tubes to the deck frame. 

The perimeter employs Viaggio’s distinguishing feature, a 3-inch-tall extruded top rail, giving the boat a solid look. New for 2025, the front vision gate features a see-through section at the top, which is a great aid when docking.

The interior layout features seating fore and aft separated amidships by the console and captain’s chairs. The console is raised 3 inches off the deck for better visibility. The pillow-top interior features white vinyl with black accents and diamond-­stitched inset cushions; the effect is rich and inviting. The bow loungers taper inward in the center to allow for easier movement around the boat without sacrificing room and comfort.

Viaggio Diamante 22S AT bow seating
The bow loungers taper inward in the center to allow for easier movement around the boat. Bill Doster

The helm station features a JL Audio system and RGB interior lighting. A Simrad NSX9 display combines with Viaggio’s electronic digital gauges to monitor the engine performance and boat functions.

Aft, the swingback lounge hugs the port side; it features a multiposition backrest that allows lying flat and sitting facing forward or aft. An extended stern deck is a perfect spot to prep for watersports, with an optional tow bar.

High Points

  • Cellphone holder/charger in dashboard keeps phone safe and visible.
  • Heated/cooled cup holder for the captain and two cup holders for the navigator are nice touches.
  • New forward egress gate offers see-through section, which aids visibility.
Viaggio Diamante 22S AT performance data
Viaggio Diamante 22S AT Certified Test Results Boating Magazine

How We Tested

  • Engine: Suzuki 300 hp outboard
  • Drive/Dual Props: Outboard/Suzuki 15.5″ x 19.5″ (front LH; rear RH) 3-blade stainless steel
  • Gear Ratio: 2.08:1 Fuel Load: 44 gal. Crew Weight: 250 lb.

Pricing and Specs

Price:$156,000 (as tested); $88,024 (base)
LOA:24’4″
Beam:8’5″
Draft:NA
Dry Weight:4,428 lb.
Seat/Weight Capacity:12/1,814 lb.
Fuel Capacity:59 gal.

Viaggio Pontoon Boats – Bristol, Indiana; viaggiopontoonboats.com