Testing the waters with Volvo Penta’s IMO Tier III solution31/05/2017
Clinton Marine Survey carries out a wide range of under-water surveys, and so requires good engine performance on its vessels, along with low emissions and minimal noise and vibration, in order for its hydrographic monitoring equipment to work well and accurate results to be recorded. The Swedish-based company opted to field test Volvo Penta’s new IMO Tier III solution and has been pleased with the outcome.
“Volvo Penta’s solution has been good,” says Johan Lindskog, master of the Clinton Marine Survey’s Northern Wind vessel. “It’s a fully automated system; we’ve noticed lower fuel consumption, lower noise, and less smoke and smell on the aft deck. As we work with acoustic instruments, a low noise and vibration profile both in the water and in the vessel is crucial for us. The less ambient noise we have, the better the instruments work.”
Clinton Marine Survey has bases in Gothenburg, Stockholm and Malmo, and operates in the seas across northern Europe. It carries out various hydrographic assessments, such as bathymetric surveys (on ocean and lake floors), seismic monitoring, remote operated vehicle (ROV) inspections, unexploded munitions (UXO) identification, magnetometer surveys (identifying magnetic material or fields), habitat mapping, and cable tracking.
Data is used to produce high resolution maps for sea charts, construction use, pipelines and cable route sites, and information on fish and algae. Magnetic detection gives locations of metals from ship-wrecks and down aircraft. These functions are tests are executed for the governments of Sweden, Finland and the UK, as well as for international energy companies.
Protecting the environment
The Northern Wind is the largest vessel in Clinton Marine Survey’s fleet and is the only one on 24-hour duty. It runs at 4-15 knots, depending on the functions it is performing, and operates for around 3,000 hours per year. The vessel is installed with two Volvo Penta D13 500 hp engines and matching aftertreatment system, to provide a solution for the International Maritime Organization’s (IMO) Tier III regulations. The new standards will stipulate a reduction in nitrogen oxides (NOx) emitted of around 70 per cent, from current IMO Tier II levels. The NOx Emission Control Area (NECA) for the Baltic and North seas will be implemented in 2021.
Volvo Penta’s IMO Tier III concept is based on the company’s existing solutions and those of the Volvo Group. The use of a selective catalytic reduction (SCR) aftertreatment system has been adapted and optimized for marine customers. It features: optimization of sulfur fuel up to 1000 ppm by increasing cell density; ability to use either 32% or 40% urea; reduced noise by up to 35 dBA; twin 6-inch outlets and 6-inch robust bolt flanges. It does not require exhaust gas recirculation (EGR).
Protecting the environment
The new IMO Tier III solution is available across all of Volvo Penta’s 13-liter engine and propulsion system ranges. NOx will be reduced from current permitted levels of 7.7 g/kWh down to 2 g/kWh.
“It is an important step for the marine industry to cut pollution levels,” says Lindskog. “We always strive to use the latest technology to deliver a superior product and be on the cutting edge in our field. Volvo Penta’s solution is a big part of making this possible. This benefits us, our clients and, of course, mother nature.”
Volvo Penta’s IMO Tier III concept offers flexible installation to suit each customer’s needs.
“This is designed for ease of use and maintenance, and is a solution for global requirements both in terms of providing optimum power with low fuel consumption and reduced emissions,” says Stefan Carlsson, Volvo Penta’s head of the marine diesel segment. “It is robust enough for the most challenging operations, and as we see from Clinton Marine, the reduction in nitrogen oxides emitted means that our solution helps to protect the environment.”
Volvo Penta will be revealing its IMO Tier III solution at the Nor-Shipping international exhibition and conference in Oslo, Norway, and will be at stand E03-29, from May 30 to June 2.