Detailed Evaluation & Buyer Recommendation
Austral Marine Odyssey 650 Sundeck Inboard 2026 vs Austral Marine Odyssey 720 Inboard (MerCruiser 6.2L V8 350hp) 2025: Same Brand, Different Boat
The Austral Marine Odyssey 650 Sundeck Inboard 2026 vs Austral Marine Odyssey 720 Inboard (MerCruiser 6.2L V8 350hp) 2025 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.
The power gap is worth calling out. Rated to 350 hp, the Austral Marine Odyssey 720 Inboard (MerCruiser 6.2L V8 350hp) 2025 has a 150-hp advantage over the Austral Marine Odyssey 650 Sundeck Inboard 2026's 200-hp ceiling - enough to notice on acceleration and at cruising speed, particularly with a full passenger load.
For family outings this is probably the sharpest distinction between the two. The Austral Marine Odyssey 720 Inboard (MerCruiser 6.2L V8 350hp) 2025 is rated for 7 passengers, while the Austral Marine Odyssey 650 Sundeck Inboard 2026 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Austral Marine Odyssey 720 Inboard (MerCruiser 6.2L V8 350hp) 2025 could be the deciding factor.
Bottom line: Choose the Austral Marine Odyssey 720 Inboard (MerCruiser 6.2L V8 350hp) 2025 if your priority is putting more people on the water - it handles 7 passengers and at 255,0 ft it has the deck room to back that rating up comfortably. The Austral Marine Odyssey 650 Sundeck Inboard 2026 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.
General Boat Info
MakeAustral Marine
MakeAustral Marine
ModelOdyssey 650 Sundeck Inboard
ModelOdyssey 720 Inboard (MerCruiser 6.2L V8 350hp)
Model Year2026
Model Year2025
Weight - Detail920 kg (boat only, excluding engine)
Weight - Detailnot available
Weight - kg920
Weight - kgnot available
Weight - lbs.2,028
Weight - lbs.not available
Measurements / Dimensions
Length overall - Detail6.55 m (6550 mm)
Length overall - Detail7.75 m
Length overall - Inches257.87
Length overall - Inches305.12
Length overall - Meters6.55
Length overall - Meters7.75
Length - Feet21 ft. 6 in.
Length - Feet25 ft 5 in
Beam2.58 m max (2580 mm)
Beam2.58 m
Beam - Inches101.57
Beam - Inches101.57
Beam - Meters2.58
Beam - Meters2.58
Weight - Detail920 kg (boat only, excluding engine)
Weight - Detailnot available
Weight - kg920
Weight - kg1300
Weight - lbs.2,028
Weight - lbs.not available
Engine and Drivetrain
Fuel tank capacity - Liters150
Fuel tank capacity - Litersnot available
Fuel tank capacity - Gal39.63
Fuel tank capacity - Galnot available
Fuel tank capacity - Detail150 L built-in fuel tank
Fuel tank capacity - Detailnot available
Horsepower200–300 hp
Horsepower350
Drive typenot available
Drive typeInboard
Fuel typenot available
Fuel typePetrol
Engine makenot available
Engine makeMerCruiser
Engine modelnot available
Engine model6.2L V8
Trailer Info
Trailer - DetailTwo axles; 185 x 14 in tyres; tare 520 kg; GVM 2100 kg; override brakes; swing hitch; mag wheels.
Trailer - Detailnot available
Trailer - Weight520
Trailer - Weightnot available
Options / Other
OptionsColour options; decal/graphic designs; non-slip fiberglass sole; bow filler cushion; cockpit sound system; loose-lay clip-in carpets; wake tower; tower sunshade; Bimini top; cockpit cover; bow cover; trailer winches; trailer tie-down straps.
OptionsManual Supreme wake tower; V-drive transmission