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Displaying items by tag: Stealth Technology

The Finnish Navy minelayer FNS Hämeenmaa is to dock in the Port of Cork at the city's central North Custom House Quay tomorrow morning, writes Jehan Ashmore.

FNS Hämeenmaa entered service in 1992 and measures 1,450 tonnes, she is the namesake class of two minelayers, the second FNS Uusimaa was also built by Finnyards in the same year.

At nearly 78m long the steel hulled vessels which have an alloy superstructure are designed to operate throughout the year in the demanding Baltic Sea conditions and the in the archipelago's.

They have an ice operating classification of ICE-1A and for military purposes they became one of first Finnish Navy vessels to incorporate stealth technology features. The pair are primarily tasked for minelaying duties but they also provide roles acting as an escort, transport and depot ships.

Armament comprises of 1 × Bofors 57 mm dual-purpose gun, 1 × eight-cell ItO 04 surface-to-air missile launcher, 2 × anti-submarine rocket launchers, 2 × depth charge rails and 100-150 sea mines (four mine laying rails).

Based in Pansio, the 20 knot vessels each have a crew complement of 60 personal. In total the Finnish Navy has around 2,100 officers, officer specialists and warrant officers, military personnel and civilian's workers.

On an annual basis close to 3,900 conscripts, of which approximately 30 are women volunteers do their military service in the navy. In addition about 3,400 reservists are trained yearly in naval refresher courses.

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