red shark bikes have unveiled a series of trimarans allowing cyclists to take on aquatic surfaces like rivers, lakes and seas. CEO and industrial designer josep rubau is the person behind the invention, who has previously designed cars for volkswagen as well as the tramontana supercar.

ex-BMW designer creates pedal-powered trimaran for cyclists to bike on water



red shark‘s three models include adventure (for the athlete looking to improve performance), fun and sport (targeting people who love expeditions or discovering new places) with the first two made of high-density polyethylene (HDPE). the adventure adds frame-mounted packs and a waterproof storage trunk as well as thicker plastic reinforcing the underside of its three hulls. the sport is constructed almost entirely of lightweight carbon fiber.

ex-BMW designer creates pedal-powered trimaran for cyclists to bike on water



all three models boast a foldable design, retractable rudder, salt water-proof drive shaft and stainless steel nuts and bolts. the fun is at the lower end of the price range costing from €4,995 (around US$5,783) whilst the adventure is priced up to €6,995 ($8,098) and the sport comes in a little higher at €9,995 ($11,570).

  • Looks like more of a still water lake craft. Are there no gears? Thanks.

    steve hassler says:
  • Why would you need to wear a helmet when operating this? Also, does it make everything go in slo-mo?

    Otto Cosmopotron says:
  • why do you need a bike helmet when riding on the water? I think a flotation device is more appropriate. Cool idea, does it reverse?

    Garry McLeod says:
  • Imagine doing this mid day, in the blistering sun, doing like 5 mph, so no wind cooling you, looking at the cyclists on land, flying past at 20 mph.
    Or even worse, on a sudden change in wind and current, which combined can outrun your maximum speed of let’s say 10 mph… Then what?

    Fanel Treimii says:
  • What’s the efficiency of this thing, doesn’t seem like any of the “bikers” are getting anywhere. They all look lethargically peddling in place

    rjayn says:
  • should be recumbent. High center of gravity is no good in big water.

    elwood says:
  • As stated by others, a helmet is not necessary, but a PFD is when using this ‘bike’. Also it could certainly benefit from a recumbent positions for the cyclist and some sort of flywheel to keep the momentum going.

    Batavier says:
  • In this day and age, its boring. The thing needs to be on a hydrofoil and actually get some speed up. If it does it could become an olympic sport. A leg powered hyrdofoil that goes FAST.

    Kelly Hunt says:
  • She needs the helmet because the boat is so short, it’s likely to nose dive and dump the rider on rocks or an oyster bed. Expandacraft has a 16 foot modular pedal drive catamaran for less that 2K.

    James Wesley Stevenson says:
  • I say put a tow ring in front, and learn to do wave running and eventually some tricks behind my Mastercraft:)

    Gregor Miller says:

have something to add? share your thoughts in our comments section below.

comments policy
designboom's comment policy guidelines
generally speaking, if we publish something, it's because we're genuinely interested in the subject. we hope you'll share this interest and if you know even more about it, please share! our goal in the discussion threads is to have good conversation and we prefer constructive opinions. we and our readers have fun with entertaining ones. designboom welcomes alerts about typos, incorrect names, and the like.
the correction is at the discretion of the post editor and may not happen immediately.

what if you disagree with what we or another commenter has to say?
let's hear it! but please understand that offensive, inappropriate, or just plain annoying comments may be deleted or shortened.

- please do not make racist, sexist, anti-semitic, homophobic or otherwise offensive comments.
- please don't personally insult the writers or your fellow commenters.
- please avoid using offensive words, replacing a few letters with asterisks is not a valid workaround.
- please don't include your website or e-mail address in your comments for the purpose of self-promotion.
- please respect jury verdicts and do not discuss offensively on the competition results
(there is only one fist prize, and designboom usually asks renown professionals to help us to promote talent.
in addition to the awarded designs, we do feel that almost all deserve our attention, that is why we publish
the best 100-200 entries too.)

a link is allowed in comments as long as they add value in the form of information, images, humor, etc. (links to the front page of your personal blog or website are not okay). unwelcome links (to commercial products or services of others, offensive material etc. ) will be redacted. and, ... yes, spam gets banned. no, we do not post fake comments.


a diverse digital database that acts as a valuable guide in gaining insight and information about a product directly from the manufacturer, and serves as a rich reference point in developing a project or scheme.

technology news