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Displaying items by tag: Secchi Depth

#MarineScience - Researchers at a UK university are hoping to enlist seafarers to help conduct one of the world's biggest studies of ocean plankton.

BBC News reports on the project by the Marine Institute at Plymouth University, which hopes to encourage fishermen and sailors alike to take part in its survey in Britain's coastal waters - including the Irish Sea - and far beyond.

Anyone participating in the study must drop off the side of their vessel an apparatus called a Secchi disk - a 30cm-wide flat white disk attached to a tape measure or a rope, and weighted from below by a small 200g weight.

When the disk disappears from view, that level is known as the Secchi Depth, which measures the turbidity of the water, which in turn is influenced by the amount of the microscopic marine wildlife in the water column.

Seafarers are being asked to record the Secchi Depth and upload to researchers via a mobile app for iOS and Android devices in order to build a complete picture of plankton activity in the world's oceans.

"If we can just get a small percentage of the global population of sailors involved, we can generate a database that will help us understand how life in the oceans is changing," said project leader Dr Richard Kirby.

"It would help us learn much more about these important organisms at a crucial time when their habitat is altering due to climate change."

BBC News has more on the story HERE.

Published in Marine Science

RC35 Class

The concept of the RC35 Class is to bring together similar boats within a close handicap banding and to work with owners and crews to develop the best racing experience possible on the Clyde and the Irish Sea area. The Class is within a tight rating band (IRC 1.015-1.040) yacht racing will be in Scotland, Ireland and Wales.

Q: What is the RC35 ‘Rule’?
A: Qualifying yachts for the RC35 Class will sit within an IRC Banding of 1.015 to 1.040. In 2017 it is proposed that a tolerance of +/- 0.05pts will be permitted

Q: Are there any other criteria?
A: RC35 takes the most prevalent IRC racing boats on the Clyde and groups them within a fixed rating band. Qualifying boats will have an LOA 32ft—38ft and displacement of between 3,000kg—9,000kg. The rule also requires boats conform to ISAF Cat.4 be anti-fouled and not dry sailed. A limit of sail purchases (2 per year) also applies.

Q: What is the RC35 Championship?
A: The RC35 Championship will cover 8 events (6 to count) and include events such as Scottish Series, Dun Laoghaire/Bangor and an RC35 Championship weekend. Each year the Class will make a commitment to one ‘away’ regatta as part of the Championship.