C4 Waterman 10’9 iSUP BK Pro


The smaller board in the Bk Pro line, the 9’10” is best for the lighter rider. Our BK Pro line was designed by Brian Keaulana to provide an all around, stable ride that can handle heavy waves and rapids as well as calm touring. With a lifetime of waterman experience going into the design, you can guarantee that these boards can and will do it all.

Out of stock

SKU: e6e4ea83-6997-4f9d-ae48-a790017973ea Category: Brand:


Recommended for:

High performance rapid riding and rapid surfing and recreational ocean surfing and touring for beginner, intermediate and advanced level riders up to 215 lbs (98 kg).
Aspiring Waterman – 165 lbs. / Journeyman Waterman – 185 lbs, / Advanced Waterman – 215 lbs.



  • 3 fins included
  • Travel bag included
  • Pump with pressure gauge
  • Inflates to 15-17 psi
  • Deck pad and hand hold included
  • Thruster “Cuttlefish” FCS fin boxes


Overall Length: 9′ 10″ (299.72cm)
Width: 33.25″ (84.455cm)
Thickness: 5.00″ (12.7cm)
Weight: 24.50 (11.14kg)*
Volume: 48.88 Gal. (185.00L)
*Weights may vary +/- 10%


Deck Pad – Alanui – Wide Path. A combination of symbols with the central pattern being the zig-zag lines. This is a symbolic connection between the islands.

All C4 iWATERMAN products are fabricated from heavy-duty, military-grade, double-wall PVC material. Inside each product, thousands of high-tech fiber ‘cilia’ anchor the deck to bottom, allowing for superior rigidity and locking in C4’s proprietary rockers–features that grant never before seen durability and the closest thing to hard board performance of any inflatable surfcraft. And unlike the other brands that use only glue on their seams, the iWATERMAN products are finely stitched with 30% additional thicker, high-tensile fiber thread, making them much tougher, stiffer, and able to withstand a higher PSI (pounds per square inch) of inflation, ranging from 14 -17 PSI. The result: A rough-and-ready surf/paddle/rescue tool that is pliant enough to bounce off rocks, yet still deliver hard product performance and reliability.