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Marine

Barnacles are a major cause of fouling of ship hulls (Image: NOAA)

Fouling of hulls is a major problem for world shipping – for private leisure craft as well as large cargo ships – with barnacles being a major culprit. It reduces the performance of vessels and increases their fuel requirements. Medetomidine has proved effective in preventing fouling of ship bottoms and now researchers attempting to develop new, environmentally friendly methods to limit marine fouling have identified the gene that causes barnacles to react to the substance, opening up the possibility of an antifouling paint that is gentle to both barnacles and the environment.  Read More

Atlantis Resources Corporation has just unveiled its recently completed AK1000 tidal turbi...

The oil and gas fields of the North Sea have been meeting the power needs of the UK population for a number of years but such things have a finite lifespan and there are different ways to get power from the sea. The world's largest and most powerful tidal power turbine has just been unveiled by Atlantis Resources Corporation ahead of installation at a special berth at the European Marine Energy Center (EMEC) in Orkney, Scotland. The AK1000 will shortly be secured to the seabed off the choppy waters of Orkney and connected to the grid at EMEC. The company claims that the turbine is capable of generating enough electricity for 1,000 homes and is the first of a series of turbines to be deployed.  Read More

The Personal Submarine provides great underwater adventuring for two

If an octopus’s garden in the shade is where you like to be then this two-person submarine could be just the ticket. Capable of descending to a depth of 1,000 feet the Personal Submarine gives you and a friend a chance to check out coral reefs, shipwrecks and whatever other attractions can be found on the sea floor. Although, with its rather steep asking price you’ll either really want to be beneath the sea, or have a really large chuck of spare change laying around.  Read More

Brownie's VS335 Third Lung diving system automatically adjusts its compression speed accor...

We’ve got cars, motorcycles and bicycles that are electric, so why not hookah air pumps for diving? They make much less noise than their gas and diesel-powered counterparts, they don’t stink up their surroundings with toxic fumes, and they don’t emit carbon. Of course, as is the case with many other e-things, the electricity that powers them has to come from somewhere, and chances are that somewhere isn’t a wind turbine or a solar panel. A new diving system from Brownie’s Marine Group, however, has another ace up its sleeve - a variable-speed compressor that automatically adjusts in accordance to the diver’s demand for air, thus saving power and allowing for longer and/or deeper dives when running off a battery.  Read More

The GUSS autonomous vehicles developed by Virginia Tech are to make their debut at the 201...

Having placed third in the prestigious DARPA Urban Challenge in 2007, engineering students from Virginia Tech have returned to the forefront of autonomous vehicle development by designing and building four GUSS (Ground Unmanned Support Surrogate) vehicles. Able to carry 1800 lbs and designed to resupply and evacuate troops in the field as well as reduce the load carried by them, the vehicles are due to make their debut at the impending 2010 Rim of the Pacific (RIMPAC)war games in Hawaii.  Read More

Unlocking water fern's secrets could pave the way for more efficient ships

Ships are big polluters and one of the key reasons for this is the energy lost due to friction as they move through the water. Numerous innovations in marine paint technology have sought to address this issue and now a group of German material research scientists have unlocked a secret that could radically improve fuel consumption... and it's all down to the marvelous properties of one small plant.  Read More

The Hyper-Sub is at home both above and below the waves

If you’re still a little strapped for cash and can’t afford a powerboat and a submarine, then you might want to consider this cross between the two - the Hyper-Sub. On top of the water it boasts speeds of 40 knots with a range of 500 surface miles thanks to twin 440 horsepower inboard Yanmar diesel engines and a 525-gallon fuel tank, while underwater it can dive to depths of 250 feet using an electric over hydraulic self-recharging dive system.  Read More

The Cooper Plastic Anchor for small watercraft being held by inventor Larry Cooper in betw...

Most small watercraft need anchors just like bigger boats, but many down-sized anchors struggle to hold these vessels in place, even breaking apart. If you ride a personal watercraft (PWC), like a Jet Ski, stowing a metal or aluminum anchor in the craft’s onboard storage containers can wreak havoc, sometimes almost punching through in rough conditions. That’s no good aboard an inflatable, either. Australian-based Cooper Anchors has designed a world-first lightweight, plastic anchor with a weighted tip, straight streamline shank and small blade that work harmoniously to drive deep into the sea bed and hold your craft in place. What’s more, it’s flexible, tough, won’t scratch or puncture your PWC or inflatable and weighs less than 1kg.  Read More

The appropriately named 'sofa boat'

The appropriately named ‘sofa boat’ is essentially a sofa slapped on top of a floating platform that is sure to make maneuvering among other craft in crowded marinas a most relaxing affair. The all-electric craft employs a joystick for steering, a folding sun canopy covering for some protection from the sun’s rays and a solar version is on the way.  Read More

The Necker Nymph submersible

It seems that Sir Richard Branson's quest to conquer unexplored frontiers isn't limited to space tourism.The Virgin boss's latest acquisition is a DeepFlight three-person aero submarine that "flies" through the briny deep using the positive buoyancy system developed by Graham Hawkes. Christened Necker Nymph, the flying sub will find a home on Branson's 74 acre private island in the British Virgin Islands where it will launch from shore as well as operating from the luxury 105 foot catamaran Necker Belle - just add a quiet US$25,000 to the weekly hire price tag.  Read More

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