Detailed Evaluation & Buyer Recommendation
Sea Ray 450 Sedan Bridge 2013 vs Sea Ray 580 Sundancer 2012 — Which Semi Displacement Fits Your Needs?
When two boats share the same hull type — in this case both the Sea Ray 450 Sedan Bridge 2013 and the Sea Ray 580 Sundancer 2012 are semi displacement designs with fiberglass construction — the buying decision usually comes down to a handful of practical questions: how many people are you putting on the water, how far do you trailer, and what does your tow vehicle weigh?
Size is the most obvious dividing line here. The Sea Ray 450 Sedan Bridge 2013 measures 45,6 feet overall (2013), giving it roughly 39,6 additional feet of deck space compared to the Sea Ray 580 Sundancer 2012 at 6,0 feet (2012). Weight tells a clearer story for trailering families: the Sea Ray 450 Sedan Bridge 2013 tips the scales at 36 602 lbs — 36 067 lbs more than the Sea Ray 580 Sundancer 2012 at 535 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 1 051 hp, the Sea Ray 580 Sundancer 2012 has a 571-hp advantage over the Sea Ray 450 Sedan Bridge 2013's 480-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Fuel capacity breaks the other way: the Sea Ray 580 Sundancer 2012 carries 825 gallons versus 375 gallons in the Sea Ray 450 Sedan Bridge 2013. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.
The Sea Ray 450 Sedan Bridge 2013 is rated for up to 13 people. Passenger data for the Sea Ray 580 Sundancer 2012 wasn't available.
Bottom line: The Sea Ray 450 Sedan Bridge 2013 at 45,6 ft is the right call if deck space, comfort, and entertaining are top of your list. The Sea Ray 580 Sundancer 2012 at 6,0 ft wins on trailering ease, likely lower purchase price, and simpler docking — a solid choice for a buyer who wants more boat for less money.
General Boat Info
Model450 Sedan Bridge
Model580 Sundancer?
Model Year2013
Model Year2012
Measurements / Dimensions
Beam14 ft. 5 in. (4.3 m)
Beam15 ft. 11 in. (4.85 m)
Beam - Meters4.39
Beam - Meters4.85
Beam - Inches173
Beam - Inches191
Deadrise17℃
Deadrise17℃
Draft [max] - Detail48 in. (122 cm)
Draft [max] - Detail54 in. (137 cm)
Draft [max] - Meters1.22
Draft [max] - Meters1.37
Draft [max] - Inches48
Draft [max] - Inches54
Weight - Detail36,602 lbs. (16,602 kg)
Weight - Detail53,500 lbs. (24,267 kg)
Weight - kg16602.37
Weight - kg24267.17
Weight - lbs.36602
Weight - lbs.535
Length - Feet45.58
Length - Feet6
Length [over all with swim platform]47 ft. 3 in. (15.44 m)
Length [over all with swim platform]60 ft. (18.29 m)
Length overall - Detail45 ft. 7 in. (13.9 m)
Length overall - Detailnot available
Length overall - Meters13.89
Length overall - Metersnot available
Length overall - Inches547
Length overall - Inchesnot available
Body / Hull
Hull materialFiberglass
Hull materialFiberglass
Hull typeSemi Displacement
Hull typeSemi Displacement
Engine and Drivetrain
Engine makeCummins®
Engine makenot available
Engine/s standardTwin QSB 480 Zeus drives with joystick control
Engine/s standardT-VD MAN 800 CRM
Fuel tank capacity - Detail375 gal. (1,418 l)
Fuel tank capacity - Detail825 gal. (3,123 l)
Fuel tank capacity - Liters1419.53
Fuel tank capacity - Liters3122.96
Fuel tank capacity - Gal375
Fuel tank capacity - Gal825
Fuel typeDiesel
Fuel typeDiesel
Drive typePod Drive
Drive typeInboard - Twin
HorsepowerTwin 480 php (353 kW)
HorsepowerTwin 765 hp (588 kW)
Engine maxnot available
Engine maxTwin 1,051 hp (785 kW)
Operational Info
Water capacity130 gal. (492 l)
Water capacity200 gal. (757 l)
Holding tank capacity - Detail42 gal. (159 l)
Holding tank capacity - Detail70 gal. (265 l)
Holding tank capacity - Liters158.99
Holding tank capacity - Liters264.98
Holding tank capacity - Gal42
Holding tank capacity - Gal7