Brown & May Marine Ltd. have undertaken a wide range of marine surveys utilising a variety of sampling and analytical methods for oil and gas, renewable energy and infrastructure clients. The company works closely with national and international regulators and research centres for the designing and approval of sampling and sample analysis methodologies. Depending on the survey aims, sampling equipment used follows standardised specifications or, where appropriate, aligns with commercial fishing techniques.

Surveys are designed to fulfil specific projects or regulatory requirements. Given below are brief summaries of the general areas for which surveys have been undertaken:

• BMML have undertaken a wide range of fish characterisation studies to inform EIAs and for pre and post construction statutory requirements for offshore developments including wind farms, oil and gas installation, pipelines and interconnector cables.
• Fish spawning surveys sampling spawning adults and larval stages to investigate the location, timing and density of fish spawning activity. The results and analysis of the samples obtained have been used to inform EIAs and to support client submissions for the removal or modification of imposed restrictions relating to piling and other noise generating offshore activities and fish spawning.
• Sampling survey using tailor made dredges and grabs to determine the locations and densities of substrate inhabiting species such as sandeels for application for EIAs and project planning.
• Surveys to evaluate the behaviour and potential physiological effects of high noise and vibration generating activities such as pile driving.
• Surveys to evaluate the behaviour of elasmobranch species in relation to sub-sea power cables.
• Trials to test the passages of a variety of fishing gears over sub-sea structures and protection measures.
• Trials to evaluate the potential loads resulting from interactions between fishing gears and sub-sea infrastructure. 
• Surveys to obtain the coordinates of static fishing gears deployed in locations to assist the planning and undertaking of construction related surveys and construction activities as well as the removal of any such gears where necessary.