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Product: Rough Water 6.70

Rosborough, Rough Water 6.70

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Model: Rough Water 6,70
Supplier: Rosborough Boats


The Rough Water™ 6.70 was developed for operators wanting the stability and performance of the Rough Water™ 9.11 but who needed to operate in tighter waterways.

Like all of Rosborough Boats’ Professional Series Craft, the Rough Water™ 6.70 with its semi-custom nature can be outfitted to meet any department or division’s specific needs and mission goals. With the 6 chamber all Hypalon slide on collar (standard on Rosborough’s Rough Water™ RIBs) the 6.70 has been popular with enforcement and rescue operators for being tough and forgiving when boarding other craft and retrieving distressed persons.


The hull form is a constant deep vee with a transom deadrise of 21 degrees and a hydro step flat at the keel with lean bow sections and sharp fore foot. The new design will ensure very soft entry into rough seas and answer the need for a fast RIB with a user friendly ride. The wide hull and inside floor width provide exceptional work space and stability at speeds and at rest.


Construction for the new Rough Water 670 employs an all new technique developed by Rosborough Boats. The Composite Modular Construction (CMC) utilizes the latest in composite technology with Vinylester resins and Corecell© core combined with unique molding and assembly of major components providing an ultra strong, light structure and allows versatility to layout and configuration options.

Positive Floatation

Positive level floatation is installed via expanded closed cell floatation foam to the modular enclosures under floor areas and makes Rough Water 670 100% unsinkable. The entire hull and structure interior is treated with fire retardant gelcoat coatings. All equipment and rigging is run through PVC conveyor tubes under center floors and the fuel system is configured center line in the hull and totally accessible via removable floor panels and hatches.

Self Draining

The Rough Water 670 floor is self draining via two 4” freeing ports in the transom and all surfaces are non skid finish. The motor well is as well self draining and incorporates tow post (optional) mounting arrangement. Large forward under floor storage/cargo area is provided and accessible via large floor hatch.

Deck Layout

The center console control unit is laid out to provide ample control and instrumentation spaces and allow for adequate space forward for rescue stretcher and patient treatment accommodation space. Aluminum frame T-Top (optional) provided ample protection from sun and rain and is through bolted to the CMC hull bulkheads under the main floor.

Power Configuration

Power configuration is for single outboard motor with 25” leg and twin power and I/O diesel are available power options. The 670 is rated for up to single 200 hp. or twin 115 hp. motors but will operate efficiently with smaller power as well.

Physical specification
LOA 22' 8'' 6.93 m
Beam 9' 5'' 2.87 m
Draft 20'' 0.51 m
Deadrise 21°
Cockpit Length (Ahead of Motorwell) 14' 4.27 m
Cockpit Width (At Floor) 5' 9"
1.75 m