Sylvan 180 Viper 2005 vs Sylvan Mirage 820 PARTY FISH 2022 - Boat Spec Comparison

Q: Which is the larger boat — the Sylvan 180 Viper 2005 or the Sylvan Mirage 820 PARTY FISH 2022?

The Sylvan Mirage 820 PARTY FISH 2022 is the longer of the two at 21,0 feet overall. The Sylvan 180 Viper 2005 comes in at 18,0 feet, making it roughly 3,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

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

The Sylvan 180 Viper 2005 has a documented max rating of 175 hp. Engine specifications for the Sylvan Mirage 820 PARTY FISH 2022 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 Sylvan 180 Viper 2005 is Coast Guard rated for 6 passengers, while the Sylvan Mirage 820 PARTY FISH 2022 is certified for 6. 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: Are the Sylvan 180 Viper 2005 and Sylvan Mirage 820 PARTY FISH 2022 from the same manufacturer?

Yes — both the Sylvan 180 Viper 2005 and the Sylvan Mirage 820 PARTY FISH 2022 are built by Sylvan. 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

Sylvan 180 Viper 2005 vs Sylvan Mirage 820 PARTY FISH 2022

Sylvan

Sylvan 180 Viper 2005

2005

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Sylvan

Sylvan Mirage 820 PARTY FISH 2022

2022

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Detailed Evaluation & Buyer Recommendation

Sylvan 180 Viper 2005 vs Sylvan Mirage 820 PARTY FISH 2022 — Same Brand, Different Boat

The Sylvan 180 Viper 2005 vs Sylvan Mirage 820 PARTY FISH 2022 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 Sylvan 180 Viper 2005 carries a rated maximum of 175 hp. Engine data for the Sylvan Mirage 820 PARTY FISH 2022 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.

Both boats are rated for 6 passengers — a good fit for a family of four or five plus guests. Comfort at capacity is another matter; the longer hull typically means more seat options and better weight distribution.

Bottom line: The Sylvan Mirage 820 PARTY FISH 2022 at 21,0 ft is the right call if deck space, comfort, and entertaining are top of your list. The Sylvan 180 Viper 2005 at 18,0 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

MakeSylvan

Makenot available

Model180 Viper

Modelnot available

Model Year2005

Model Yearnot available

Measurements / Dimensions

Beam96 in

Beamnot available

Beam - Meters2.44

Beam - Metersnot available

Beam - Inches96

Beam - Inchesnot available

Deadrise19℃

Deadrisenot available

Weight - Detail1,763 lbs

Weight - Detailnot available

Weight - kg799.68

Weight - kgnot available

Weight - lbs.1763

Weight - lbs.not available

Width [transom] - Detail92 in

Width [transom] - Detailnot available

Length - Feet18

Length - Feet21

Length overall - Detail18 ft. 0 in

Length overall - Detail21.00 ft

Length overall - Meters5.49

Length overall - Meters6.4

Length overall - Inches216

Length overall - Inches252

Engine and Drivetrain

Fuel tank capacity - Detail37 gal

Fuel tank capacity - Detailnot available

Fuel tank capacity - Liters140.06

Fuel tank capacity - Litersnot available

Fuel tank capacity - Gal37

Fuel tank capacity - Galnot available

Drive typeOutboard

Drive typenot available

Engine max175 hp

Engine maxnot available

Fuel typenot available

Fuel typeOther

Operational Info

Maximum capacity1,950 lbs

Maximum capacitynot available

Maximum people6

Maximum peoplenot available

Holding tank capacity - Galnot available

Holding tank capacity - Gal21

Holding tank capacity - Litersnot available

Holding tank capacity - Liters79.49

Boat typenot available

Boat typePower

Sylvan 180 Viper 2005 vs Sylvan Mirage 820 PARTY FISH 2022 — Common Questions

Which is the larger boat — the Sylvan 180 Viper 2005 or the Sylvan Mirage 820 PARTY FISH 2022?

The Sylvan Mirage 820 PARTY FISH 2022 is the longer of the two at 21,0 feet overall. The Sylvan 180 Viper 2005 comes in at 18,0 feet, making it roughly 3,0 ft shorter — a meaningful difference in deck room and overall on-water presence.

What is the maximum horsepower rating for these boats?

The Sylvan 180 Viper 2005 has a documented max rating of 175 hp. Engine specifications for the Sylvan Mirage 820 PARTY FISH 2022 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 Sylvan 180 Viper 2005 is Coast Guard rated for 6 passengers, while the Sylvan Mirage 820 PARTY FISH 2022 is certified for 6. 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.

Are the Sylvan 180 Viper 2005 and Sylvan Mirage 820 PARTY FISH 2022 from the same manufacturer?

Yes — both the Sylvan 180 Viper 2005 and the Sylvan Mirage 820 PARTY FISH 2022 are built by Sylvan. 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.

← Sylvan 180 Viper 2005 full specs ← Sylvan Mirage 820 PARTY FISH 2022 full specs