Manufacturer of Saturn Inflatables Since 1999

18' Saturn Inflatable Boat SD518

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Shipping: C$250

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What is the 18-feet SD518 Saturn Inflatable Boat Designed for?

A vast variety of inflatable boats from the SATURN line is designed to help people find the ideal boat for their purposes, whether it would be a small ship-to-shore inflatable yacht tender, a large heavy-duty workboat, or anything in between. Here, we would like to introduce our latest and largest addition to the Saturn family of high performance heavy-duty inflatable boats – the 18-feet SD518 Saturn inflatable motor boat.

First of all, due to the SD518 model can carry up to 10 people and/or heavy cargo and has maximum load capacity of 2,500lbs, it can be used as a commercial workboat. It has 3 aluminum seats, and grommet splash guard with grab safety rope is moved off-center to create comfortable seating surface on top of oversized tubes.

The 18-feet SD518 Saturn inflatable boat is great for any water based activity that requires carrying a group of people and cargo: scuba diving event with the friends; camping on a lake shore in “the middle of nowhere” in the Canadian wilderness; fishing trip; birthday party on a remote beach with barbequing, swimming and water skiing; weekend water adventure with kids and a dog; summer vacation in a natural park or just a pleasure day on the water.

Advantages of the 18' SD518 Saturn Inflatable Boat

  • This large heavy-duty inflatable workboat is made of the premium quality material – a 1,100 Dtex heavy-duty PVC fabric with polyester support. This innovative material provides the boat with excellent resistance to tearing, tension and breaking improving its durability and practicality.
  • Double layers of fabric at the bottom of the tubes and a rub-strake protector along the keel provide extra protection from sharp rocks and abrasive sand. The 5-layer thick construction's outer layer protects the boat against UV rays, ozone and abrasion, and inner layers provide perfect strength and adhesion.
  • The safety valve prevents excessive air pressure in the boat chambers.
  • The 18-feet SD518 Saturn inflatable boat has a sectional aluminum floor. The bow section is made of a marine grade plywood floor covered with a gray resin. To know more about aluminum floor installation, please click here.
  • The SD518 Saturn inflatable watercraft can take up to a 40 HP short shaft motor, but can plane nice and easy with a less powerful engine. Despite being large and heavy, it is also easy to paddle.
  • Once the boat deflated and folded, it folds to the size of one large and heavy bag with tubes (about 150lb) and another large and heavy flat bag with a floor (about 120lb). They can be carried in the back of your SUV or minivan and can be stored in a large closet of your apartment or in a garage. A bag with deflated and packed boat can be carried around with inexpensive foldable hand cart. Inflated boat can be transported with help of our removable dinghy wheels that are attached to the transom.
  • Our accessories for inflatable boats could make your watercraft more comfortable. The inflatable boat can be easily turned into a sailboat by using our portable sail kit. A canopy top to protect from the summer sun or rain could be installed. And a foldable and lightweight ladder will make your swimming much more pleasant.

Places to go with your SD518 Saturn Inflatable Boat - Lake Superior Provincial Park, Ontario, Canada

Lake Superior Provincial Park is located along the shore of Lake Superior - the largest lake in the world, “fresh water sea”. Its vast interior includes a shoreline with the cliffs up to 200m (650ft) high in Old Woman Bay to the 3km (2 mile) long beach at Agawa Bay, a diverse landscape of forested hills, clear inland lakes, streams, rivers, and waterfalls. It is spectacular and grandeur. Just stunning!

Boating: Powerboats are allowed on Lake Superior (no motor size restriction) and Sand Lake (motor size 10 HP or less), whereas on all other lakes in the park all engines are prohibited. With your SD518 Saturn inflatable boat you can explore the remote sections of the Lake Superior shoreline.

Paddling: There are eight canoe routes in the park, ranging from easy day trips to the 56km Sand River. Due to the rugged terrain of the Lake Superior Provincial Park, portaging must be done frequently, and the portages can be steep and uneven. You can also enjoy paddling along the Lake Superior shoreline.

Fishing: The park offers fantastic trout fishing, one of the best in Ontario. There are good populations of lake and rainbow trout and three species of salmon in Lake Superior and in coastal streams and rivers. Please note that to prevent the introduction on non-native species, the use and possession of live-bait fish (live minnows) is banned on interior park lakes.

Pictographs: When Lake Superior is calm, you can discover Agawa Rock Pictographs – 35 red ochre images are visible. This is a sacred site where generations of Ojibwe have come to record dreams, visions and events.

Camping: Lake Superior Provincial Park has 2 campgrounds, 3 picnic areas, 11 hiking trails, 8 canoe routes, and 200 backcountry campsites, most of them are accessible only by boat.


  • All around rope grab line
  • Separate internal air chambers
  • 3 one-way drain valves with plug
  • All around, durable rubber strike
  • Safety valve to prevent over inflation
  • Stainless steel D-rings for easy towing
  • Reliable flat air valves with pushpin design
  • Front bow D-ring with integral lifting handle
  • Spare rope for attaching anchor is included
  • Double layer of fabric at the bottom of tubes.
  • Holds up to 10 persons maximum or 6 comfortably
  • Deep inflatable V-keel with a rub strake protector
  • Heavy-duty marine grade aluminum floor is included
  • Extra thick heavy-duty marine grade plywood transom
  • Lightweight and strong removable aluminum seat benches


  • Repair kit
  • 3 Seat benches
  • Carry bag
  • High-volume hand pump

Video of Saturn SD518 inflatable boat

Tech Specs

Overall length:
Inside Length:
Overall Width:
Inside Width:
Tube Diameter:
3 + 1
Person Capacity:
Loading Capacity:
2500 lbs
Max Motor Power:
50 HP(15" shaft / 175 lbs)
Tube Weight:
140 lbs
Floor Type:
Anodized Aluminium
1100 Denier Reinforced PVC
Quadruple Overlap
Air Valves:
Recessed One-Way
Speed (approx.):
30 mph (40HP w/2 adults)
Inflation & Assembly:
45 min.
Tube Shipping Size:
53 x 28 x 14"
Tube Shipping Weight:
149 lbs
Floor Shipping Size:
48 x 31 x 7"
Floor Shipping Weight:
128 lbs
Floor Weight:
121 lbs
Specifications and accessories are subject to change without notice. Max O/B Motor means: maximum power of outboard motor that can be safely used to plane the boat loaded to the maximum capacity at normal water surface conditions. Please exercise common
Average Star Rating:
5.00 (1 review Total)
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