Maxum 2100SD Sport Deck 2005 boat specs
Maxum
Maxum 2100SD Sport Deck 2005
2005
View full specs →
VS
Maxum 4200SY Sport Yacht 2006 boat specs
Maxum
Maxum 4200SY Sport Yacht 2006
2006
View full specs →

Maxum 2100SD Sport Deck 2005 vs Maxum 4200SY Sport Yacht 2006 — Same Brand, Different Boat

The Maxum 2100SD Sport Deck 2005 vs Maxum 4200SY Sport Yacht 2006 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 Maxum 4200SY Sport Yacht 2006 tops out at 425 hp. Engine specs for the Maxum 2100SD Sport Deck 2005 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Maxum 2100SD Sport Deck 2005 carries 55 gallons versus 48 gallons in the Maxum 4200SY Sport Yacht 2006. 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 Maxum 4200SY Sport Yacht 2006 is rated for 13 passengers, while the Maxum 2100SD Sport Deck 2005 caps at 6. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Maxum 4200SY Sport Yacht 2006 could be the deciding factor.

Bottom line: Choose the Maxum 4200SY Sport Yacht 2006 if your priority is putting more people on the water — it handles 13 passengers and at 42,0 ft it has the deck room to back that rating up comfortably. The Maxum 2100SD Sport Deck 2005 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 6 that costs less to run day-to-day.
General Boat Info
MakeMaxum
MakeMaxum
Model2100SD Sport Deck
Model4200SY Sport Yacht
Model Year2005
Model Year2006
Measurements / Dimensions
Beam8 ft. 6 in. (2.59 m)
Beam13 ft. 10 in. (4.22 m)
Beam - Meters2.59
Beam - Meters4.22
Beam - Inches102
Beam - Inches166
Bridge clearance - Detail4 ft. 10 in. (1.47 m)
Bridge clearance - Detail12 ft. 10 in. (3.91 m)
Bridge clearance - Meters1.47
Bridge clearance - Meters3.91
Bridge clearance - Inches58
Bridge clearance - Inches154
Deadrise20℃
Deadrise18°
Draft [drive up] - Detail1 ft. 7 in. (.48 m)
Draft [drive up] - Detail2 ft. 11 in. (.89 m)
Draft [drive up] meters0.48
Draft [drive up] meters0.89
Draft [drive up] inches19
Draft [drive up] inches35
Draft [max] - Detail3 ft. 0 in. (.91 m)
Draft [max] - Detail3 ft. 8 in. (1.12 m)
Draft [max] - Meters0.91
Draft [max] - Meters1.12
Draft [max] - Inches36
Draft [max] - Inches44
Weight - Detail3,928 lbs. (1,782 kg) w/Std. Engine
Weight - Detail28,800 lbs. (13,064 kg) with standard engine
Weight - kg1781.71
Weight - kg13063.45
Weight - lbs.3928
Weight - lbs.288
Length [over all with swim platform]23 ft. 2 in. (7.06 m)
Length [over all with swim platform]not available
Length overall - Detail21 ft. 1 in. (6.43 m)
Length overall - Detail42 ft. 10 in. (13.06 m)
Length overall - Meters6.43
Length overall - Meters13.06
Length overall - Inches253
Length overall - Inches514
Length - Metersnot available
Length - Meters13.06
Length - Feetnot available
Length - Feet42
Length - Inchesnot available
Length - Inches1
Engine and Drivetrain
Fuel tank capacity - Detail55 gal. (212 l)
Fuel tank capacity - Detail480 gal. (1,816 l)
Fuel tank capacity - Liters208.2
Fuel tank capacity - Liters1817
Fuel tank capacity - Gal55
Fuel tank capacity - Gal48
Engine/s standardnot available
Engine/s standardT-425 5.9 l QSB diesel Cummins MerCruiser®
Fuel typenot available
Fuel typeDiesel
Drive typenot available
Drive typeInboard
Engine maxnot available
Engine maxT-425 hp
Trailer Info
Trailer - Height7 ft. 11 in. (2.41 m)
Trailer - Heightnot available
Trailer - Length over all27 ft. 4 in. (8.33 m)
Trailer - Length over allnot available
Trailer - Weight4,928 lbs. (2,235 kg) w/Std. Engine
Trailer - Weightnot available
Trailer - Width8 ft. 6 in. (2.59 m)
Trailer - Widthnot available
Operational Info
Headnot available
HeadVacuFlush?
Sleeping capacitynot available
Sleeping capacity6
Water capacitynot available
Water capacity130 gal. (492 l)
Water heater capacitynot available
Water heater capacity11 gal
Holding tank capacity - Detailnot available
Holding tank capacity - Detail72 gal. (272 l)
Holding tank capacity - Litersnot available
Holding tank capacity - Liters272.55
Holding tank capacity - Galnot available
Holding tank capacity - Gal72

Maxum 2100SD Sport Deck 2005 vs Maxum 4200SY Sport Yacht 2006 — Common Questions

Which is easier to trailer — the Maxum 2100SD Sport Deck 2005 or the Maxum 4200SY Sport Yacht 2006?
For trailering, the Maxum 4200SY Sport Yacht 2006 has the edge at 288 lbs dry weight versus 3 928 lbs for the Maxum 2100SD Sport Deck 2005. 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.
What is the maximum horsepower rating for these boats?
The Maxum 4200SY Sport Yacht 2006 has a documented max rating of 425 hp. Engine specifications for the Maxum 2100SD Sport Deck 2005 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 Maxum 2100SD Sport Deck 2005 is Coast Guard rated for 6 passengers, while the Maxum 4200SY Sport Yacht 2006 is certified for 13. 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 Maxum 4200SY Sport Yacht 2006 measures 166" wide, compared to 102" for the Maxum 2100SD Sport Deck 2005. 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 Maxum 2100SD Sport Deck 2005 or the Maxum 4200SY Sport Yacht 2006?
The Maxum 2100SD Sport Deck 2005 has the bigger tank at 55 gallons, versus 48 gallons on the Maxum 4200SY Sport Yacht 2006. That 7-gallon difference translates to roughly 21–35 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Maxum 2100SD Sport Deck 2005 and Maxum 4200SY Sport Yacht 2006 from the same manufacturer?
Yes — both the Maxum 2100SD Sport Deck 2005 and the Maxum 4200SY Sport Yacht 2006 are built by Maxum. 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.