FRV Alba Na Mara 0123A
Cruise summary report
| Cruise Info. | |
| Ship name (ship code) | FRV Alba Na Mara (74NM) |
| Cruise identifier | 0123A |
| Cruise period | 2023-01-06 — 2023-01-22 |
| Status | Completed |
| Port of departure | Fraserburgh, United Kingdom |
| Port of return | Fraserburgh, United Kingdom |
| Purpose | Research |
| Objectives | Objectives
1. To observe fauna using the static lander and time lapse camera. 2. To monitor burrow reconstruction following trawl activity. 3. To obtain video footage from Nephrops grounds using adjustable lasers mounted on the TV sledge and drop frame to estimate Nephrops burrow complex size. 4. To compare two different methodologies to establish Nephrops burrow abundance (using the sledge and drop frame UWTV systems). 5. To use the video footage to record occurrence of other benthic fauna and evidence of commercial trawling activity. 6. To obtain video footage from Nephrops grounds using a crane deployed, mini drop frame to measure Nephrops burrow diameter, and where possible, associated complex size. 7. To collect trawl caught samples of Nephrops for comparison of reproductive condition and morphometrics. 8. To record and collect any trawl caught marine litter. Narrative in attached cruise report. |
| Chief scientist | Adrian Weetman (Marine Scotland Aberdeen Marine Laboratory) |
| Cruise programme |  (0.03 MB) |
| Cruise report | (0.07 MB) |
| Ocean/sea areas | |
| General | Inner Seas off the West Coast of Scotland |
| Specific | Moray Firth, Loch Torridon, Loch Inver |
| Track charts | (0.14 MB) |
| Measurements | |
| Biology and fisheries | |
| Crustaceans | Quantity: number of stations = 1 Description: Video footage of seabed to establish Nephrops burrow densities and to record other benthic observations. |
| Crustaceans | Quantity: number of deployments = 10 Description: Bottom contact frame, drifting over Nephrops grounds to establish burrow entrance size |
| Crustaceans | Quantity: number of deployments = 20 Description: Video footage of seabed to establish Nephrops burrow densities using sledge |
| Crustaceans | Quantity: number of deployments = 15 Description: Video footage of seabed to establish Nephrops burrow densities using drop frame |
| Geology and geophysics | |
| Grab | Quantity: number of hauls = 17 Description: Sediment samples for Particle Size Analysis. |
| Bottom photography | Quantity: number of images = 92 Description: Time lapse camera digital images |
