INDUSTRY ROUND-UP
appropriate steps to minimise the negative impact of operations.
Noise pollution, fortunately, can be tackled extremely rapidly. Vessels can be made quieter by elevating engines off the ship floor or using propellers designed to reduce cavitation (the creation of tiny bubbles which explode and produce a loud ‘pop’). Many cruise ships are starting to use electric motors to drive their propellers, too — mainly to reduce noise levels for passengers, but also to benefit marine life.
In terms of chemical pollution and oil spills, regular vessel maintenance is critical. Engine bolts should be tightened to prevent oil leaks, hydraulic lines should be fitted before they fail, and any cracks should be mended immediately.
Thankfully, things are also going in the right direction when it comes to reducing air pollution from vessels. Shipping will be added to the UK’s net-zero carbon target (although not until 2023), and amendments
Mobilis EOL Buoy 3.6m Diameter Data Navigation Buoy
The Mobilis Environment Observable Littoral (EOL) data buoy is an automatic profiler buoy originally designed to measure the impact of human activity in coastal waters. The buoy is fitted with a number of sensors that measure water quality, including: conductivity, temperature, depth, pH, dissolved oxygen, chlorophyll A and turbidity. The buoy is also fitted with a meteorological station.
The EOL buoy comprises a 3.6m diameter hull constructed from multiple-section polyethylene floats that are bolted around a central steel structure, with through-hull access for underwater instrumentation and cabling. The instrument package is automatically lowered from the buoy to the seabed and back at preset intervals with data gathered during the lowering and raising operations.
All data is transmitted to shore as well as being logged in the onboard data acquisition/telemetry unit. When the instrument package is in its raised position, it is stored within a unique electro-chlorination chamber, which automatically cleans the sensors of any biofouling. The large tower allows technicians to undertake checks and routine maintenance of the sensors and data acquisition system within the safe confines of the tower. It also provides suitable mounting for a large solar array that recharges a battery bank, which in turn provides power for the instrument package, the data acquisition and telemetry system and, most importantly, the winch. A multi-point mooring system is deployed to avoid entanglement of the instrumentation being lowered beneath the buoy.
Features ✓ UV-stabilised MDPE components – retains colour within IALA guidelines for more than 15 years;
✓ Highly stable in strong currents and deep water; ✓ Modular system – reduces spares holding; ✓ Robust, compact design; ✓ Through-hull access; ✓ Automatic winch to lift and lower instrumentation; ✓ Modular solar power systems; ✓ Electro-chlorination room for automatic cleaning of sensors; ✓ Multi-point mooring system.
q +44 (0)1420 520374 E
sales@hydrosphere.co.uk H
www.hydrosphere.co.uk
to the directive mean the sector will now also be subject to the MRV (Monitoring, Reporting and Verification) Regulation within the EU.
To achieve these targets, ships will need to start using cleaner fuel alternatives, such as methanol marine fuel, and look to new, greener ways of working without hindering operations. For example, engineless sailing cargo ships could transport cargo and passengers on shipping lines all over the world.
October 2020
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