Ranger Boats Z518L 2021 boat specs
Ranger
Ranger Boats Z518L 2021
2021
View full specs →
VS
Ranger Z21 COMANCHE SERIES 2006 boat specs
Ranger
Ranger Z21 COMANCHE SERIES 2006
2006
View full specs →

Ranger Boats Z518L 2021 vs Ranger Z21 COMANCHE SERIES 2006 — Same Brand, Different Boat

The Ranger Boats Z518L 2021 vs Ranger Z21 COMANCHE SERIES 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.

On paper these two are close siblings in the size department — Ranger Boats Z518L 2021 at 18,1 ft versus Ranger Z21 COMANCHE SERIES 2006 at 21,0 ft. Weight tells a clearer story for trailering families: the Ranger Boats Z518L 2021 tips the scales at 1 650 lbs — 1 631 lbs more than the Ranger Z21 COMANCHE SERIES 2006 at 19 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 Ranger Z21 COMANCHE SERIES 2006 tops out at 200 hp. Engine specs for the Ranger Boats Z518L 2021 aren't listed — confirm with a dealer before selecting an outboard.Fuel capacity breaks the other way: the Ranger Boats Z518L 2021 carries 39 gallons versus 24 gallons in the Ranger Z21 COMANCHE SERIES 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 Ranger Z21 COMANCHE SERIES 2006 is rated for 6 passengers, while the Ranger Boats Z518L 2021 caps at 5. If you're regularly pulling extended family or a group of friends onto the water, the extra seats on the Ranger Z21 COMANCHE SERIES 2006 could be the deciding factor.

Bottom line: Choose the Ranger Z21 COMANCHE SERIES 2006 if your priority is putting more people on the water — it handles 6 passengers and at 21,0 ft it has the deck room to back that rating up comfortably. The Ranger Boats Z518L 2021 is the smarter pick if you want a lighter, easier-to-trailer boat rated for 5 that costs less to run day-to-day.
Measurements / Dimensions
Length overall - Detail18.10 ft
Length overall - Detail21 ft. 2 in
Length - Feet18.1
Length - Feet21
Length overall - Meters5.52
Length overall - Meters6.45
Length overall - Inches217
Length overall - Inches254
Beam8.10 ft
Beam95 in
Beam - Meters2.47
Beam - Meters2.41
Beam - Inches97
Beam - Inches95
Displacement1650.00 lbs
Displacementnot available
Depth - Detailnot available
Depth - Detail21 in
Depth - Centimetersnot available
Depth - Centimeters53.34
Depth - Inchesnot available
Depth - Inches21
Weight - Detailnot available
Weight - Detail1,875 lbs. with single console 1,900 lbs. with dual console
Weight - kgnot available
Weight - kg861.82
Weight - lbs.not available
Weight - lbs.19
Height [transom]not available
Height [transom]23 in
Length - Inchesnot available
Length - Inches2
Engine and Drivetrain
Fuel tank capacity - Gal39
Fuel tank capacity - Gal24
Fuel tank capacity - Liters147.63
Fuel tank capacity - Liters90.85
Engine makeMercury
Engine makenot available
Fuel typeGas
Fuel typenot available
Drive typeoutboard
Drive typenot available
Fuel tank capacity - Detailnot available
Fuel tank capacity - Detail(2) 24 gal
Engine maxnot available
Engine max200-250 hp
Operational Info
TrailerableYes
Trailerablenot available
Boat typePower
Boat typenot available
Maximum capacitynot available
Maximum capacity1,800 lbs
General Boat Info
Makenot available
MakeRanger
Modelnot available
ModelZ21 Comanche Series
Model Yearnot available
Model Year2006
Trailer Info
Trailer - Detailnot available
Trailer - DetailDual axle trailer GVWR (5,000 lbs.)
Trailer - Length over allnot available
Trailer - Length over all26 ft. 4 in. with motor down 24 ft. 4 in. with swing-away tongue open
Trailer - Widthnot available
Trailer - Width102 in

Ranger Boats Z518L 2021 vs Ranger Z21 COMANCHE SERIES 2006 — Common Questions

Which is the larger boat — the Ranger Boats Z518L 2021 or the Ranger Z21 COMANCHE SERIES 2006?
The Ranger Z21 COMANCHE SERIES 2006 is the longer of the two at 21,0 feet overall. The Ranger Boats Z518L 2021 comes in at 18,1 feet, making it roughly 2,9 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the Ranger Boats Z518L 2021 or the Ranger Z21 COMANCHE SERIES 2006?
For trailering, the Ranger Z21 COMANCHE SERIES 2006 has the edge at 19 lbs dry weight versus 1 650 lbs for the Ranger Boats Z518L 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.
What is the maximum horsepower rating for these boats?
The Ranger Z21 COMANCHE SERIES 2006 has a documented max rating of 200 hp. Engine specifications for the Ranger Boats Z518L 2021 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 Ranger Boats Z518L 2021 is Coast Guard rated for 5 passengers, while the Ranger Z21 COMANCHE SERIES 2006 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.
Which boat is wider, and does it affect trailering?
The Ranger Boats Z518L 2021 measures 97" wide, compared to 95" for the Ranger Z21 COMANCHE SERIES 2006. 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 Ranger Boats Z518L 2021 or the Ranger Z21 COMANCHE SERIES 2006?
The Ranger Boats Z518L 2021 has the bigger tank at 39 gallons, versus 24 gallons on the Ranger Z21 COMANCHE SERIES 2006. That 15-gallon difference translates to roughly 45–75 nautical miles of additional range at cruising speed, depending on motor, load, and conditions.
Are the Ranger Boats Z518L 2021 and Ranger Z21 COMANCHE SERIES 2006 from the same manufacturer?
Yes — both the Ranger Boats Z518L 2021 and the Ranger Z21 COMANCHE SERIES 2006 are built by Ranger. 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.