SeaArk Cast & Blast 2005 boat specs
SeaArk
SeaArk Cast & Blast 2005
2005
View full specs →
VS
SeaArk Forecast 170C 2007 boat specs
SeaArk
SeaArk Forecast 170C 2007
2007
View full specs →

SeaArk Cast & Blast 2005 vs SeaArk Forecast 170C 2007 — Same Brand, Different Boat

The SeaArk Cast & Blast 2005 vs SeaArk Forecast 170C 2007 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 — SeaArk Cast & Blast 2005 at 15,0 ft versus SeaArk Forecast 170C 2007 at 17,0 ft. Weight tells a clearer story for trailering families: the SeaArk Forecast 170C 2007 tips the scales at 775 lbs — 720 lbs less than the SeaArk Cast & Blast 2005 at 55 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 SeaArk Cast & Blast 2005 carries a rated maximum of 40 hp. Engine data for the SeaArk Forecast 170C 2007 wasn't available in our records — check the manufacturer's spec sheet before sizing a motor.

Both boats are rated for 4 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 SeaArk Cast & Blast 2005 and SeaArk Forecast 170C 2007 are closely matched on the specs that matter most. Test-ride both on the water you actually use, check current dealer pricing, and factor in long-term service access before you sign.
General Boat Info
MakeSeaArk
MakeSeaArk
ModelCast & Blast
ModelForecast 170C
Model Year2005
Model Year2007
Measurements / Dimensions
Beam67 in. (1.7 m)
Beam71 in
Beam - Meters1.7
Beam - Meters1.8
Beam - Inches67
Beam - Inches71
Depth - Detail20 in. (.51 m))
Depth - Detail21 in
Depth - Centimeters50.8
Depth - Centimeters53.34
Depth - Inches2
Depth - Inches21
Weight - Detail550 lbs. (249.5 kg)
Weight - Detail775 lbs
Weight - kg249.48
Weight - kg351.53
Weight - lbs.55
Weight - lbs.775
Width [transom] - Detail48 in. (1.07 m)
Width [transom] - Detail50 in
Height [transom]20 in. (.51 m)
Height [transom]20 in
Length - Meters4.57
Length - Metersnot available
Length - Feet15
Length - Feet17
Length overall - Detail15 ft. 0 in. (4.57 m)
Length overall - Detail17 ft. 0 in
Length overall - Meters4.57
Length overall - Meters5.18
Length overall - Inches18
Length overall - Inches204
Body / Hull
Hull thickness.100 in. (2.54 mm)
Hull thickness0.100 in
Hull materialnot available
Hull materialAluminum
Engine and Drivetrain
Drive typeOutboard
Drive typeOutboard
Engine max40 hp (29.8 kw)
Engine maxnot available
Engine/s standardnot available
Engine/s standard75 hp
Fuel typenot available
Fuel typeGas
Operational Info
Maximum capacity830 lbs. (376.1 kg)
Maximum capacity1,005 lbs
Maximum people4
Maximum people4

SeaArk Cast & Blast 2005 vs SeaArk Forecast 170C 2007 — Common Questions

Which is the larger boat — the SeaArk Cast & Blast 2005 or the SeaArk Forecast 170C 2007?
The SeaArk Forecast 170C 2007 is the longer of the two at 17,0 feet overall. The SeaArk Cast & Blast 2005 comes in at 15,0 feet, making it roughly 2,0 ft shorter — a meaningful difference in deck room and overall on-water presence.
Which is easier to trailer — the SeaArk Cast & Blast 2005 or the SeaArk Forecast 170C 2007?
For trailering, the SeaArk Cast & Blast 2005 has the edge at 55 lbs dry weight versus 775 lbs for the SeaArk Forecast 170C 2007. 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 SeaArk Cast & Blast 2005 has a documented max rating of 40 hp. Engine specifications for the SeaArk Forecast 170C 2007 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 SeaArk Cast & Blast 2005 is Coast Guard rated for 4 passengers, while the SeaArk Forecast 170C 2007 is certified for 4. 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 SeaArk Forecast 170C 2007 measures 71" wide, compared to 67" for the SeaArk Cast & Blast 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.
Are the SeaArk Cast & Blast 2005 and SeaArk Forecast 170C 2007 from the same manufacturer?
Yes — both the SeaArk Cast & Blast 2005 and the SeaArk Forecast 170C 2007 are built by SeaArk. 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.