Menu

Ireland's sailing, boating & maritime magazine

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

Waszp sailing

The Waszp project was conceived in 2010 by Andrew McDougall, designer of the world-beating Mach 2 foiling Moth. 

The Waszp was created as a strict one-design foiler, where, as the class says “the true test when raced is between crews and not boats and equipment”.

The objective of the class rules is to ensure that this concept is maintained. Keeping possible modifications to a minimum ensures fair racing across the fleet, helps to reduce the overall cost to the sailor and reduces the amount of time in the workshop. 

The popularity of the WASZP has proven that the boat and the concept work. In October 2021, 1237 boats had been sold to over 45 countries. 

The top speed recorded on the foiling dinghy is 26.7 knots. 

60-95kgs+ is a weight range competitive across varied conditions with rigs knowns as ‘8.2’ and ‘6.9’.

The cost of a Moth dinghy in Europe is €14,400 inc VAT + shipping according to the manufacturers in October 2021.