Sealine Ambassador 285 1987 boat specs
Sealine
Sealine Ambassador 285 1987
1987
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VS
Sealine S335 2021 boat specs
Sealine
Sealine S335 2021
2021
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Sealine Ambassador 285 1987 vs Sealine S335 2021 — Same Brand, Different Boat

The Sealine Ambassador 285 1987 vs Sealine S335 2021 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.

Size is the most obvious dividing line here. The Sealine S335 2021 measures 33,1 feet overall (2021), giving it roughly 4,6 additional feet of deck space compared to the Sealine Ambassador 285 1987 at 28,5 feet (1987). Weight tells a clearer story for trailering families: the Sealine S335 2021 tips the scales at 13 536 lbs — 5 159 lbs less than the Sealine Ambassador 285 1987 at 8 377 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 400 hp, the Sealine S335 2021 has a 200-hp advantage over the Sealine Ambassador 285 1987's 200-hp ceiling — enough to notice on acceleration and at cruising speed, particularly with a full passenger load. Both carry nearly identical fuel loads — 128 gal and 125 gal — so range won't be a tiebreaker here.

For family outings this is probably the sharpest distinction between the two. The Sealine S335 2021 is rated for 10 passengers, while the Sealine Ambassador 285 1987 caps at 8. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Sealine S335 2021 could be the deciding factor.

Bottom line: Choose the Sealine S335 2021 if your priority is putting more people on the water — it handles 10 passengers and at 33,1 ft it has the deck room to back that rating up comfortably. The Sealine Ambassador 285 1987 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 8 that costs less to run day-to-day.
Measurements / Dimensions
Length overall - Detail28.50 ft
Length overall - Detail33.10 ft
Length - Feet28.5
Length - Feet33.1
Length overall - Meters8.69
Length overall - Meters10.09
Length overall - Inches342
Length overall - Inches397
Beam10.20 ft
Beam11.60 ft
Beam - Meters3.11
Beam - Meters3.54
Beam - Inches122
Beam - Inches139
Draft [max] - Detail2.80 ft
Draft [max] - Detail3.30 ft
Draft [max] - Meters0.85
Draft [max] - Meters1.01
Draft [max] - Inches34
Draft [max] - Inches40
Displacement8377.00 lbs
Displacement13536.00 lbs
Engine and Drivetrain
Fuel tank capacity - Gal128
Fuel tank capacity - Gal125
Fuel tank capacity - Liters484.53
Fuel tank capacity - Liters473.18
Engine makeVolvo penta
Engine makeVolvo Penta
Engine modelKAD32P
Engine modelD6
Horsepower200 hp
Horsepower400 hp
Fuel typeDiesel
Fuel typeDiesel
Drive typeinboard
Drive typeinboard
Operational Info
Sleeping capacity3
Sleeping capacity4
Cabins2
Cabins2
Head1
Head1
Boat typePower
Boat typePower
Water capacitynot available
Water capacity48
Performance
Maximum speednot available
Maximum speed28
Maximum speed measurenot available
Maximum speed measureknots

Sealine Ambassador 285 1987 vs Sealine S335 2021 — Common Questions

Which is the larger boat — the Sealine Ambassador 285 1987 or the Sealine S335 2021?
The Sealine S335 2021 is the longer of the two at 33,1 feet overall. The Sealine Ambassador 285 1987 comes in at 28,5 feet, making it roughly 4,6 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Sealine Ambassador 285 1987 or the Sealine S335 2021?
For trailering, the Sealine Ambassador 285 1987 has the edge at 8 377 lbs dry weight versus 13 536 lbs for the Sealine S335 2021. Add a motor (typically 300–500 lbs for an outboard in this class), gear, and a partial fuel load and the difference grows. Lighter is friendlier on smaller tow vehicles and on fuel economy while hauling.
Which boat can handle a bigger outboard?
The Sealine S335 2021 is rated to a maximum of 400 hp, giving it the larger power ceiling. The Sealine Ambassador 285 1987 tops out at 200 hp. Keep in mind that maximum ratings are just that — matching the motor to the actual load and usage pattern usually matters more than chasing the ceiling.
How many people can each boat hold?
The Sealine Ambassador 285 1987 is Coast Guard rated for 8 passengers, while the Sealine S335 2021 is certified for 10. 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 Sealine S335 2021 measures 139" wide, compared to 122" for the Sealine Ambassador 285 1987. 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 Sealine Ambassador 285 1987 or the Sealine S335 2021?
The Sealine Ambassador 285 1987 has the bigger tank at 128 gallons, versus 125 gallons on the Sealine S335 2021. That 3-gallon difference translates to roughly 9–15 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Sealine Ambassador 285 1987 and Sealine S335 2021 from the same manufacturer?
Yes — both the Sealine Ambassador 285 1987 and the Sealine S335 2021 are built by Sealine. 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.