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Displaying items by tag: Roisin class OPV

#NAVAL SERVICE NEWBUILDS - Minister for Justice Equality & Defence, Mr. Alan Shatter, T.D., announced on Friday that the building of new Naval Service offshore patrol vessels (OPV) ships is well underway.

The keel laying ceremony of the first of two OPV's took place at Babcock Marine's shipyard in north Devon. Senior representatives of the Naval Service and the Department of Defence attended the ceremony at the UK shipyard which won the €99m contract to build the pair in 2010.

The cost is exclusive of VAT and subject to contract terms and final agreed costs. In addition the cost of providing a weapons system for the ships, similar to the systems on the LE Roisin (P51) and LE Niamh (P52) will be €7.8m, exclusive of VAT.

This pair are of the 'Roisin' class OPV's which were built at the same Devon yard then owned by Appledore Shipbuilders. The newbuilds are of the PV90 design which are a lengthened version of the PV80 class, which were also designed by STX Canada Marine and completed by Appledore in 1999 and 2001.

The PV90 newbuilds will retain the overall configuration of the PV80 but will be increased in length by over 10 metres. They are also to have a slightly deeper draft for improved sea-keeping while patrolling in rougher waters particularly throughout Ireland's extensive naval duties in the Atlantic.

In addition there will be more space at the aft-deck to load on board containers and an increased speed to 23 knots. The will be crew for 44 personnel plus additional quarters for 10 trainee crew.

The payment contract schedule has been arranged over an eight-year timeframe, being 2010 to 2017 and funded from within the annual Defence budget.

The first newbuild is due for delivery in early 2014 followed by the second vessel in 2015. The PV90 class are to replace two of the older Naval Service ships from operational service while maintaining an eight-strong fleet.

Published in Navy

About Electric outboard engines

The direct-drive component in electric outboard engines means that the electric motors are incredibly efficient compared to conventional marine combustion motors, operating with considerably higher torque whilst using less power.

Without any need for gears, cooling systems and moving parts the motors are maintenance free, highly efficient and economic to run.

As a result, electric boat engines are becoming more popular on Irish waters as the world transitions from fossil fuels to green energy.

To date, popular electric engine sizes have been trolling engines typically used by fishermen on lakes.

These marine engines are available in models that can be used in fresh water and sea water, for your boat or kayak.

Electric motors are Ideal for fishermen because they are quiet and create little in the way of disturbance 

Popular electric trolling models range from 30lb thrust to 55lb thrust in a range of shaft lengths.

But use is becoming broader now in 2021 and electric outboard engines are being used on small runabouts and RIBS where electric outboard engine sizes are getting bigger.

Outboard electric engines are economical and environmentally friendly. Battery technology is also improving at a rapid rate meaning they are becoming smaller and lighter and run for longer.

Built in hydro-generation provides alternative recharging options whilst under sail are also options meaning the electric outboard now has a home on the stern on small yachts and dayboats too.

As far back as 2014, Torqeedo owner Jack O'Keefe from Cork Harbour told Afloat readers of his sailing adventures in a Drascombe Coaster dinghy and how after swapping from a petrol version the rewards from his new electric outboard engine are less noise, no smells, more stowage, better sailing performance and a motor that can be started by a small child. But it's still not silent, there's a whine he says here 

Popular brands in Ireland are Torqeedo, ePropulsion, Pulsar and Minn Kota but there are more arriving all the time as the technology advances