How good can artificial waves be anyway?
Which brings us to the point: Why, then, are we trying to build artificial waves? Are we really arrogant enough to think that we can do better than Mother Nature? Yeah, we can probably shape a perfect wall of water, but that’s far from the whole story: where’s the scent of salt and seaweed on the air, the roar of water against rock, the cries of seabirds… The sheer feeling of being enveloped in energy and life? Can the experience ever match up to the real deal? The surf media has been buzzing with press releases about advances in wave generation technology and new plans for wave parks recently: magazine comment boxes are rife with controversy and the usual strong opinions about the impending reality of manufactured and perfectly manicured waves.
The answer is actually pretty simple though – why on Earth not? They may never replace or compare to the real thing, but there are many upsides. Wave parks are the ideal place to refine technique and perfect advanced manoeuvres. If surfing is going to continue it’s gravity-defying aerial progression, wave parks are likely to be at the forefront of the scene: the consistency of a totally predictable wave that breaks in exactly the same way every time allows un-paralleled opportunities to experiment. Critics consider this predictability a downside, but let me ask you this: would you waste a perfect liquid JBay ramp to try something mental (backflip, anyone?) that you 99.99% won’t stick? No? Well how about in a wave pool, when you know the next wave will be just as good? I thought so.
Moving down from the cutting edge of the sport, artificial waves still bring nothing but positives. Are work and family conspiring to keep you from the beach at the right tide, or – gasp – living inland so you can’t make the swell? No worries, just head to the pool for a floodlight session after work. It may not be quite as good as the real thing, but at least it’ll keep your skills sharp for when the stars finally align on your day off!
How Does The Technology Work?
Early wave machines worked by a combination of pumping water into special chambers, then using compressed air to force it rapidly back into a pool. The system works well, and can generate surprisingly shreddable 4 foot+ waves, as at Wadi Adventure Park in the UAE. The main advantages of this sort of system is that it can be controlled very precisely, and that most of the machinery is in dry rooms so it’s easy to access and repair. However, it also has some big flaws: the pumps require a LOT of energy so they’re expensive to run, and as the system needs to re-capture and pump water after every cycle, there is a long (90 second) wait between waves.
Newer designs like Wavegarden are totally different: a sledge-like hydrofoil is dragged along a central track at the bottom of a pool, underneath a pier-like construction. As the foil runs along its track, it builds waves that then bend off the pier, simultaneously forming a left and right hander. At the end of the track, the foil simply rotates 180° and runs in the opposite direction, generating a further two waves. This more elegant solution is more appealing to both surfers and investors: the more efficient design uses less energy and produces more waves, which means that despite lower operational costs more people can use it per session, hopefully result in lower entrance costs.