Marine

MRV Alba na Mara: Survey 1715A Programme

November 6, 2015 by Marine Directorate Communications No Comments | Category Compliance, Marine Directorate general, Marine Directorate Science, Research Vessel Surveys

Duration: 10-23 November 2015

Gear: Surface and subsurface PAM moorings

Objectives: To retrieve a series of moorings comprising dhan buoys (eight surface marked moorings) or acoustic release systems (22 subsurface moorings) and the acoustic recording devices attached to them (30 C-POD and ten SM2M/SM3M) as part of the east coast marine mammal monitoring programme (see Table 1 and Figure 1 shown below).

Procedure: Loading of all equipment will be carried out on 6 November when the previous survey (1615A) returns to Fraserburgh. Alba na Mara will sail from Fraserburgh on the morning of 10 November and make for the first mooring position. The ultimate order in which the moorings are retrieved will be dictated by the weather forecast and the likely shelter that can be provided by the east coast. Acoustically triggered moorings that may have malfunctioned, but can be located by echosounder, will be grappled for using the creeping hook attached to the trawl warp. It may be necessary for Alba na Mara to make a partial unloading of retrieved moorings to ensure enough available space on the vessel. If this is the case the vessel will visit the most suitable port depending on her location.

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Further information:

• Table 1 1715A: ID, name and geographic position of all 30 moorings deployed in July 2015 during 1015A. Surface marked positions are highlighted in grey. 
• MRV Alba na Mara Survey 1015A Programme. 

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