Date posted: March 3, 2016
Subacoustech Environmental’s Tim Mason and Adam Collett have completed the first phase of a detailed study of offshore noise propagation from the installation of an offshore windfarm. Measurements were taken during foundation installation at the Block Island Wind Farm in Rhode Island, the first offshore wind farm in the USA. Noise and vibration over and under water and on the coast was sampled simultaneously during impact piling under different wind speeds, wind directions, blow energies, water depths, water conditions, sea states and distances from the piling.
All the significant results will be written up and submitted for publishing once an appropriate journal has been selected. The project was run by HDR Inc. and sponsored by BOEM.
Date posted: August 21, 2015
Subacoustech Environmental are pleased to announce that our quality management system has been assessed and approved by QMS as meeting the standards of
The quality management system applies to “the provision of acoustic surveys and associated consultancy.”
Subacoustech has had good quality systems in place for a long time and were pleased to find that very little work was required to meet the standard required. The quality management system passed with no rectifications required.
Date posted: May 11, 2015
A major study by Subacoustech into underwater noise exposure to commercial divers has been published in the Undersea and Hyperbaric Medicine Journal. Tim Mason and Adam Collett studied the noise levels inside and outside the divers’ helmets under typical operations in hyperbaric conditions at depths of 30 and 120 m, as well as using high noise equipment in shallow waters. Measurements were taken with divers using air and heliox, and found to exceed legislated limits for noise exposure even without the use of noisy tools.
Details of the study are available here: http://www.ncbi.nlm.nih.gov/pubmed/26094290
The study assisted by the Norwegian Oil and Gas Association (Norsk Olje og Gass), Bergen University College diving school, Norsk Yrkesdykkerskole in Oslo, Technip and Subsea7.
Date posted: October 27, 2014
Please be aware that as of Monday 27th October, Subacoustech Environmental Ltd have moved offices. Our new address is…
Following earlier problems with our phone system, normal service has now resumed and we can be contacted on our main number 01489 892881.
Date posted: May 23, 2014
Subacoustech has recently completed a 3 year project funded by DEFRA in conjunction with Loughine Ltd, Newcastle University and Hull University. As a result of this work, Tony Hawkins of Loughine Ltd, Louise Roberts of Hull University and Samuel Cheesman of Subacoustech Environmental Ltd have published a paper in the Journal of the Acoustical Society of America.
The paper details an experiment carried out in Lough Hyne in Ireland. It involved playing back piling sounds to fish using underwater speakers manufactured by Subacoustech Environmental Ltd, to see what level would cause the fish to avoid the sound.
It can be viewed and downloaded here: http://dx.doi.org/10.1121/1.4870697
Date posted: August 9, 2013
Samuel Cheesman from Subacoustech Environmental presented a paper at the Conference on the effects of noise on aquatic life. Tim Mason also attended. This biennial conference follows the previous one in Cork, 2012 and focused on the effects of underwater noise on all forms of aquatic life. Samuel’s paper was presented on 13th August and described the noise produced by 5 different windfarms and its possible effects on marine life. The paper can be found here.
Date posted: September 28, 2012
We will be presenting our progress on research into noise exposure for divers and running a workshop at the International Maritime Contractors Association Annual Seminar 28th-29th November 2012 in Amsterdam.
This year’s seminar is titled Marine and Subsea Operations, a Culture of Sustainability. See www.imca-int.com/events for more details.
Date posted: September 28, 2012
Dr Jeremy Nedwell and Tim Mason from Subacoustech Environmental are both presenting papers at the Acoustics 2012 conference, hosted by the Australian Acoustical Society, in Fremantle, Australia. This years conference has a strong focus this year on underwater acoustics, marine development and the impact of noise on marine mammals and fish. Both papers will be presented on Thursday 22nd November and will draw on our experience in offshore wind farm development. If you see them at the conference please come and say hello, or if you are in the Perth area around 19th - 23rd November and would like to meet up then please contact us.