Ocean Alexander 78 Motoryacht 2008 vs Ocean Alexander 90R 2020 - Boat Spec Comparison

Q: Which is the larger boat — the Ocean Alexander 78 Motoryacht 2008 or the Ocean Alexander 90R 2020?

The Ocean Alexander 90R 2020 is the longer of the two at 90,0 feet overall. The Ocean Alexander 78 Motoryacht 2008 comes in at 78,0 feet, making it roughly 12,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

Q: What is the maximum horsepower rating for these boats?

The Ocean Alexander 90R 2020 has a documented max rating of 1 920 hp. Engine specifications for the Ocean Alexander 78 Motoryacht 2008 were not available in our database — check the OEM spec sheet or manufacturer's website for confirmation.

Q: How many people can each boat hold?

The Ocean Alexander 78 Motoryacht 2008 is Coast Guard rated for 23 passengers, while the Ocean Alexander 90R 2020 is certified for 27. 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.

Q: Which boat has the larger fuel tank — the Ocean Alexander 78 Motoryacht 2008 or the Ocean Alexander 90R 2020?

The Ocean Alexander 78 Motoryacht 2008 has the bigger tank at 23 gallons, versus 3 gallons on the Ocean Alexander 90R 2020. That 20-gallon difference translates to roughly 60–100 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Q: Are the Ocean Alexander 78 Motoryacht 2008 and Ocean Alexander 90R 2020 from the same manufacturer?

Yes — both the Ocean Alexander 78 Motoryacht 2008 and the Ocean Alexander 90R 2020 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.

Boat Comparison

Ocean Alexander 78 Motoryacht 2008 vs Ocean Alexander 90R 2020

Ocean Alexander

Ocean Alexander 78 Motoryacht 2008

2008

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Ocean Alexander

Ocean Alexander 90R 2020

2020

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Detailed Evaluation & Buyer Recommendation

Ocean Alexander 78 Motoryacht 2008 vs Ocean Alexander 90R 2020 — Same Brand, Different Boat

The Ocean Alexander 78 Motoryacht 2008 vs Ocean Alexander 90R 2020 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 90R 2020 tops out at 1 920 hp. Engine specs for the Ocean Alexander 78 Motoryacht 2008 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Ocean Alexander 78 Motoryacht 2008 carries 23 gallons versus 3 gallons in the Ocean Alexander 90R 2020. 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 90R 2020 is rated for 27 passengers, while the Ocean Alexander 78 Motoryacht 2008 caps at 23. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Ocean Alexander 90R 2020 could be the deciding factor.

Bottom line: Choose the Ocean Alexander 90R 2020 if your priority is putting more people on the water — it handles 27 passengers and at 90,0 ft it has the deck room to back that rating up comfortably. The Ocean Alexander 78 Motoryacht 2008 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 23 that costs less to run day-to-day.

General Boat Info

MakeOcean Alexander

Makenot available

Model78 Motoryacht

Modelnot available

Model Year2008

Model Yearnot available

Measurements / Dimensions

Beam21 ft. (6.4 m)

Beamnot available

Beam - Meters6.4

Beam - Metersnot available

Beam - Inches252

Beam - Inchesnot available

Draft [max] - Detail5 ft. 2 in. (1.57 m)

Draft [max] - Detail5.83 ft

Draft [max] - Meters1.57

Draft [max] - Meters1.78

Draft [max] - Inches62

Draft [max] - Inches70

Weight - Detail160,892 lbs. (72,980 kg)

Weight - Detailnot available

Weight - kg72979.32

Weight - kgnot available

Weight - lbs.160892

Weight - lbs.not available

Length [at waterline]70 ft. 10 in. (21.59 m)

Length [at waterline]not available

Length - Meters23.9

Length - Metersnot available

Length - Feet78

Length - Feet90

Length - Inches5

Length - Inchesnot available

Length overall - Detail78 ft. 5 in. (23.9 m)

Length overall - Detail90.00 ft

Length overall - Meters23.9

Length overall - Meters27.43

Length overall - Inches941

Length overall - Inches1080

Draft Minnot available

Draft Min5.67 ft

Body / Hull

Hull materialFiberglass

Hull materialnot available

Hull typeSemi Displacement

Hull typenot available

Engine and Drivetrain

Engine/s standardTwin CAT 1,400 hp

Engine/s standardnot available

Fuel tank capacity - Detail2,300 gal. (8,710 l)

Fuel tank capacity - Detailnot available

Fuel tank capacity - Liters8706.44

Fuel tank capacity - Liters11356.23

Fuel tank capacity - Gal23

Fuel tank capacity - Gal3

Fuel typeDiesel

Drive typeInboard

Drive typenot available

Engine makenot available

Engine makeMTU

Horsepowernot available

Horsepower1920 hp

Operational Info

Water capacity500 gal. (1,890 l)

Water capacity45

Holding tank capacity - Detail200 gal. (757 l)

Holding tank capacity - Detailnot available

Holding tank capacity - Liters757.08

Holding tank capacity - Gal2

Headnot available

Head7

Boat typenot available

Boat typePower

Ocean Alexander 78 Motoryacht 2008 vs Ocean Alexander 90R 2020 — Common Questions

Which is the larger boat — the Ocean Alexander 78 Motoryacht 2008 or the Ocean Alexander 90R 2020?

The Ocean Alexander 90R 2020 is the longer of the two at 90,0 feet overall. The Ocean Alexander 78 Motoryacht 2008 comes in at 78,0 feet, making it roughly 12,0 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 90R 2020 has a documented max rating of 1 920 hp. Engine specifications for the Ocean Alexander 78 Motoryacht 2008 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 78 Motoryacht 2008 is Coast Guard rated for 23 passengers, while the Ocean Alexander 90R 2020 is certified for 27. 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 has the larger fuel tank — the Ocean Alexander 78 Motoryacht 2008 or the Ocean Alexander 90R 2020?

The Ocean Alexander 78 Motoryacht 2008 has the bigger tank at 23 gallons, versus 3 gallons on the Ocean Alexander 90R 2020. That 20-gallon difference translates to roughly 60–100 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.

Are the Ocean Alexander 78 Motoryacht 2008 and Ocean Alexander 90R 2020 from the same manufacturer?

Yes — both the Ocean Alexander 78 Motoryacht 2008 and the Ocean Alexander 90R 2020 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.

← Ocean Alexander 78 Motoryacht 2008 full specs ← Ocean Alexander 90R 2020 full specs