New for 2026, and redesigned with EVA foram seat, additional handles, updated rubstrake and new Mercury logos.
The Mercury 420 Ocean Runner Hypalon (CSM) Rigid Inflatable Boat (RIB) is a serious step up in the Ocean Runner range - offering more deck space, higher capacity, and greater horsepower. With its flat inner floor and integrated bow step/storage locker, the 420 provides outstanding comfort and practicality, making it equally at home as a versatile standalone family boat or as a heavy-duty tender for larger yachts and cruisers.
With space for up to 7 adults and a payload capacity of 800 kg, the Ocean Runner 420 is built for adventure. Rated for up to 40 hp outboards, it delivers confident performance and stability on the water. The OceanRunner seris has been trusted in Australia over 15 years by sailing clubs, training programs, and recreational boaters who need a durable and spacious craft that performs well in demanding conditions.
For added flexibility, the 420 Ocean Runner can be configured in multiple ways: leave it as an open runabout for maximum deck space, or option it with a jockey console or full bench console for improved comfort, steering, and control. This adaptability makes it suitable for everything from casual family use to club training or tender duties on larger yachts.
Hull Features
- Deep-V fibreglass hull with a flat inner floor for comfort, stability, and easy movement onboard
- Front bow step with integrated storage locker — ideal for anchor, ropes, and gear
- Fibreglass construction for superior rigidity and long service life
- Non-slip deck surface for safer boarding and operation
- Stainless steel transom towing eyes and davit lifting points for easy hoisting
- One-way drain valve to keep the deck clear and dry
Buoyancy Tube & Construction
- Premium Hypalon (CSM) fabric — industry-leading resistance to UV, abrasion, and chemicals
- Four independent air chambers for enhanced safety and redundancy
- Semi-recessed quick-seal valves for simple inflation and deflation
- Rounded end cones improve planing, buoyancy, and wave-handling
- Heavy-duty rub strake for additional tube protection
- Multiple grab handles and cleat/transport points for secure handling and mooring
Standard Equipment
- Removable fibreglass seat
- Aluminium oars
- Double-action pump with pressure gauge
- Storage/carry bag
- Hypalon repair kit (fabric only; adhesive not included)
Optional Accessories
- Jockey console or bench console configuration
- Under-seat storage bag
- 12V Bravo automatic inflator/deflator
- Custom-fitted protective boat cover
Specifications
| Name | 420 Ocean Runner |
| Bow locker | Yes |
| Carrying bag | No |
| Colour | Grey, White |
| Fabric | MehlerHeytex PVC (Option), Hypalon CSM (Standard) |
| Fabric thickness (CSM) | N/A |
| Fabric thickness (PVC) | N/A |
| Inflatable keel | No |
| Inside length | 298cm |
| Load capacity | 800kg |
| Maximum engine weight | 110kg |
| Maximum horsepower | 40hp |
| Number of air chambers | 4 |
| Overall beam | 180cm |
| Overall length | 420cm |
| Passenger capacity (CSM) | 7 |
| Passenger capacity (PVC) | 7 |
| Seat | Yes |
| Shaft Length | Long |
| Tube diameter | 470mm |
| Tube pressure (psi / bar) | 3.6 PSI |
| Two oars or paddles | Yes |
| Weight Hypalon (CSM) (Standard) | 123kg |
| Weight (PVC) (Optional) | 120kg |
Pallet Dimensions: 360x80x125
Why Choose the Ocean Runner Hypalon?
The Ocean Runner range is designed for owners who demand strength, comfort, and practicality. Unlike lighter tenders such as the Dynamic series, the Ocean Runner provides a flat inner deck with integrated bow storage for improved usability and comfort. The 420 stands out with its ability to be left as a spacious open boat or fitted with a jockey or bench console for extra control and comfort. With Hypalon (CSM) tubes providing unmatched durability against UV and wear, the Mercury 420 Ocean Runner is built to handle tough Australian conditions for years of dependable service.