Ocean Alexander 70E 2017 boat specs
Ocean Alexander
Ocean Alexander 70E 2017
2017
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VS
Ocean Alexander 78 Motoryacht 2007 boat specs
Ocean Alexander
Ocean Alexander 78 Motoryacht 2007
2007
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Ocean Alexander 70E 2017 vs Ocean Alexander 78 Motoryacht 2007 — Same Brand, Different Boat

The Ocean Alexander 70E 2017 vs Ocean Alexander 78 Motoryacht 2007 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 Ocean Alexander 70E 2017 carries a rated maximum of 1 200 hp. Engine data for the Ocean Alexander 78 Motoryacht 2007 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.Fuel capacity breaks the other way: the Ocean Alexander 70E 2017 carries 104 gallons versus 23 gallons in the Ocean Alexander 78 Motoryacht 2007. On a lake day that's negligible, but for coastal cruising or long reservoir runs the extra range matters.

For family outings this is probably the sharpest distinction between the two. The Ocean Alexander 78 Motoryacht 2007 is rated for 23 passengers, while the Ocean Alexander 70E 2017 caps at 21. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Ocean Alexander 78 Motoryacht 2007 could be the deciding factor.

Bottom line: Choose the Ocean Alexander 78 Motoryacht 2007 if your priority is putting more people on the water — it handles 23 passengers and at 78,0 ft it has the deck room to back that rating up comfortably. The Ocean Alexander 70E 2017 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 21 that costs less to run day-to-day.
Measurements / Dimensions
Length overall - Detail70.00 ft
Length overall - Detail78 ft. 5 in. (23.9 m)
Length - Feet70
Length - Feet78
Length overall - Meters21.34
Length overall - Meters23.9
Length overall - Inches840
Length overall - Inches941
Beam18.17 ft
Beam21 ft. (6.4 m)
Beam - Meters5.54
Beam - Meters6.4
Beam - Inches218
Beam - Inches252
Draft [max] - Detail4.98 ft
Draft [max] - Detail5 ft. 2 in. (1.57 m)
Draft [max] - Meters1.52
Draft [max] - Meters1.57
Draft [max] - Inches60
Draft [max] - Inches62
Weight - Detailnot available
Weight - Detail160,892 lbs. (72,980 kg)
Weight - kgnot available
Weight - kg72979.32
Weight - lbs.not available
Weight - lbs.160892
Length [at waterline]not available
Length [at waterline]70 ft. 10 in. (21.59 m)
Length - Metersnot available
Length - Meters23.9
Length - Inchesnot available
Length - Inches5
Engine and Drivetrain
Fuel tank capacity - Gal104
Fuel tank capacity - Gal23
Fuel tank capacity - Liters3936.83
Fuel tank capacity - Liters8706.44
Engine makeVOLVO PENTA
Engine makenot available
Horsepower1200 hp
Horsepowernot available
Drive typeinboard
Drive typeInboard
Engine 2 Engine MakeVOLVO PENTA
Engine 2 Engine Makenot available
Engine 2 Horsepower1200 hp
Engine 2 Horsepowernot available
Engine 2 Drive Typeinboard
Engine 2 Drive Typenot available
Engine/s standardnot available
Engine/s standardTwin CAT 1,400 hp
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail2,300 gal. (8,710 l)
Fuel typenot available
Fuel typeDiesel
Operational Info
Water capacity3
Water capacity500 gal. (1,890 l)
Boat typePower
Boat typenot available
Holding tank capacity - Detailnot available
Holding tank capacity - Detail200 gal. (757 l)
Holding tank capacity - Litersnot available
Holding tank capacity - Liters757.08
Holding tank capacity - Galnot available
Holding tank capacity - Gal2
General Boat Info
Makenot available
MakeOcean Alexander
Modelnot available
Model78 Motoryacht
Model Yearnot available
Model Year2007
Body / Hull
Hull materialnot available
Hull materialFiberglass
Hull typenot available
Hull typeSemi Displacement

Ocean Alexander 70E 2017 vs Ocean Alexander 78 Motoryacht 2007 — Common Questions

Which is the larger boat — the Ocean Alexander 70E 2017 or the Ocean Alexander 78 Motoryacht 2007?
The Ocean Alexander 78 Motoryacht 2007 is the longer of the two at 78,0 feet overall. The Ocean Alexander 70E 2017 comes in at 70,0 feet, making it roughly 8,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
What is the maximum horsepower rating for these boats?
The Ocean Alexander 70E 2017 has a documented max rating of 1 200 hp. Engine specifications for the Ocean Alexander 78 Motoryacht 2007 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.
How many people can each boat hold?
The Ocean Alexander 70E 2017 is Coast Guard rated for 21 passengers, while the Ocean Alexander 78 Motoryacht 2007 is certified for 23. Note that legal capacity and comfortable capacity aren't always the same thing — on a full day out, most experienced boaters aim for about 80% of the rated number to keep things comfortable.
Which boat is wider, and does it affect trailering?
The Ocean Alexander 78 Motoryacht 2007 measures 252" wide, compared to 218" for the Ocean Alexander 70E 2017. The US standard-width towing limit is 8’6" (102") in most states — anything over that may need a wide-load permit. Confirm your specific route requirements with each state's DOT.
Which boat has the larger fuel tank — the Ocean Alexander 70E 2017 or the Ocean Alexander 78 Motoryacht 2007?
The Ocean Alexander 70E 2017 has the bigger tank at 104 gallons, versus 23 gallons on the Ocean Alexander 78 Motoryacht 2007. That 81-gallon difference translates to roughly 243–405 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Ocean Alexander 70E 2017 and Ocean Alexander 78 Motoryacht 2007 from the same manufacturer?
Yes — both the Ocean Alexander 70E 2017 and the Ocean Alexander 78 Motoryacht 2007 are built by Ocean Alexander. That means shared dealer networks, common parts availability, and consistent build quality across the line. The choice between them is essentially a question of how much boat you need, not which brand you trust.