Inflatable Boats · Reviews
11′ of inflatable boat, room for 4 people, rated up to a 15 hp (11 kw) outboard. Here is an honest, spec-by-spec look at the KM330D: what it does well, what it costs, and who it is actually for.
Affiliate disclosure: KayakDIY may earn a commission from qualifying purchases made through links in this article, at no extra cost to you.
If you are shopping inflatable boats, the 11′ Saturn V-Keel Boat KM330D deserves a close look. It is an 11′ inflatable boat aimed at boaters who want a real boat that still packs into the back of an SUV. It is rated for 4 people with a 470 kg (1036 lbs) load capacity, which covers a realistic day on the water for most buyers.
At $899, it lands in the middle of the pack on price. If you want to skip ahead, check the current price here.
For this review I went through the full spec sheet line by line, so everything below comes from what the manufacturer actually publishes (dimensions, capacities, and construction) plus what those numbers mean once the KM330D is on the water.
Key Features
- 11′ long × 5 ft 3 in wide
- 16.5 in tubes
- 3 air chambers
- Rated for 4 people
- 470 kg (1036 lbs) maximum load
- Transom rated up to 15 HP (11 kW)
- Weighs 58 kg (127.8 lbs)
- Packs into 100 x 65 x 50 cm (39″ x 26″ x 20″)
- 28 oz/yd² PVC
On the Water
On the water, three numbers tell you most of what you need to know: length, beam, and tube diameter. At 11′ long and 5 ft 3 in wide with 16.5 in tubes, the KM330D is a mid-size inflatable with a reassuring footprint. In inflatables, tube diameter and beam do most of the work keeping you level: wide tubes are why these boats feel so much more stable than their weight suggests.
The V-keel hull is worth calling out: the inflatable keel gives it a V shape up front, so it tracks straighter and rides softer in chop than a flat-bottom inflatable. You give up a little shallow-water draft in exchange.
The transom is rated for up to 15 HP (11 kW). That keeps you in small-outboard territory: light, affordable motors that one person can lift and mount. That is the whole point of a boat like this: enough power to get you to the spot without the cost, weight, and upkeep of a big rig.
Plan around the 470 kg (1036 lbs) load rating, not just the person count. Add up people, motor, fuel or battery, cooler, and gear before you buy. If that math lands close to the limit, size up, a boat that runs near its rating is slower, wetter, and less fun.
Build and Materials
The tubes are 28 oz/yd² PVC.
The spec sheet lists 3 air chambers. Separate chambers are a safety feature, not a spec-sheet decoration: if one compartment is ever compromised, the others keep you afloat.
Weight, Portability, and Setup
The KM330D weighs 58 kg (127.8 lbs). That is a genuine one-person carry from the truck to the water. It packs into a 100 x 65 x 50 cm (39″ x 26″ x 20″) package.
BoatsToGo does not publish a setup time for this model. For an inflatable this size, plan on 15–20 minutes with a decent pump the first few times; it gets faster once you have done it a couple of times.
Who It’s For: and Who Should Skip It
Who it is for: anglers, divers, and families who need a tender, or a standalone fishing boat, without owning a trailer, running up to a 15 HP (11 kW) outboard. If your fishing looks like trailer-free launches, skinny water, and packing the whole rig into a vehicle, the KM330D fits the program.
Honest trade-offs: it is still an inflatable, so inflation and setup are part of every trip. Sharp shells, hooks, and rocky shorelines demand the same respect you would give any PVC boat. Rinse it after saltwater use and store it out of long-term direct sun: UV is the slow killer of every inflatable ever made.
Who should skip it: if you want to turn the key and go with zero setup, or you regularly run rocky rivers, a rotomolded or aluminum hull will make you happier.
How It Compares
Within Saturn’s current range, the next step down is the 18′ Inflatable Boats SD518 (17.8 ‘) at $1,799 and the next step up is the 11′ Saturn Flat Bottom Boat KM330 (130 in (around 11’)) at $749. If you are torn between sizes, the usual advice holds: buy for the load you will actually carry most weekends, not the biggest crew you might take once a year. A smaller boat that runs light is faster, drier, and easier to handle than a bigger one loaded to its limit.
Care and Maintenance
An inflatable boat rewards basic care and punishes neglect, the good news is the care part is simple. Rinse it with fresh water after saltwater use, and let it dry before you roll it up; packing a damp boat away is how mildew starts.
Watch air pressure when temperatures swing. Air expands in the heat and contracts in the cold, so a boat inflated drum-tight on a cool morning can get very firm by midday. Bleed a little air if the tubes feel overly hard, and top up when evenings cool off.
For storage, keep it out of long-term direct sun, UV is the slow killer of every inflatable, and store it loosely rolled or partially inflated rather than folded tight on the same creases every time. Keep sand and grit out of the valves, and carry a small patch kit aboard. None of this is difficult; it is just the routine that keeps an KM330D going for years instead of seasons.
KM330D Specs
| Spec | Detail |
|---|---|
| Length | 130 in (around 11′) |
| Inside Length | 87.4 in (7 ft 3 in) |
| Width | 63 in (5 ft 3 in) |
| Inside Width | 27.6 in (2 ft 3.6 in) |
| Tube Diameter | 16.5 in |
| Air Chambers | 3 |
| Person Capacity | 4 |
| Max Load | 470 kg (1036 lbs) |
| Max Motor | 15 HP (11 kW) |
| Boat Weight | 58 kg (127.8 lbs) |
| Shipping Size | 100 x 65 x 50 cm (39″ x 26″ x 20″) |
| Material | 28 oz/yd² PVC |
| CE Design Category | Class C |
| Transom Height | 381 mm (15″) |
Frequently Asked Questions
How many people can the KM330D carry?
It is rated for 4 people, with a maximum load of 470 kg (1036 lbs). Stay under both numbers, capacity and total weight, for the safest, driest ride.
What size outboard can I put on the KM330D?
The transom is rated for up to 15 HP (11 kW). Stay at or under that rating: overpowering a small inflatable is dangerous and can void any warranty.
How much does the KM330D weigh?
The boat itself weighs 58 kg (127.8 lbs).
How small does it pack down?
The packed size is 100 x 65 x 50 cm (39″ x 26″ x 20″). That fits in most car trunks or SUV cargo areas.
Where to Buy
The 11′ Saturn V-Keel Boat KM330D is listed at $899 on BoatsToGo‘s website. If it sounds like your kind of boat:
Pricing and availability change, so confirm the current price on the product page before ordering.
