Summer Rose

Summer Rose

Control and Power

The electronics package on board Summer Rose includes advanced positioning and ground discrimination systems essential for effective scalloping, and Summer Rose has the latest in acoustic sounding equipment and seabed plotting systems providing detailed seabed topography data.

Dave Moore

Sixteen AG-Neovo monitors, including twelve 19-inch screens, are flush mounted in the well-arranged wheelhouse to display the data from the array of high-tech electronics installed and commissioned by David Simcox of Electrotech Marine in Oban.

Two tiers of monitors are housed in the streamlined main forward console, in front of a central NorSap skipper’s chair flanked by two island consoles on which the master fishing console, engine/steering, autopilot and sonar control units are mounted.

A 60kHz Furuno CSH 250 searchlight sonar scans ahead of the vessel, while vertical sounding is handled by a Simrad S5100 sounder with Chirp or fixed frequency modes of 42kHz -65kHz and 130 kHz -210kHz. A WASSP F3 160Khz Multibeam system is interfaced to Summer Rose’s MaxSea TimeZero plotter, and the skipper also has 2D/3D outputs from two Olex plotting systems displayed on twin screens.

The main radar is a Furuno FAR211BB, with a halo Broadband radar backup provided by a Simrad EVO2 multifunction BB unit that also provides further bottom sounding and plotting options.

The Furuno SC-70 satellite compass is linked to the the Simrad AP70 autopilot system, which includes the joystick controls and two Simrad rudder angle indicators.

Summer Rose also has a Furuno BR 500 Bridge Navigation Watch Alarm System (BNWAS) which interfaced to a motion detector mounted in the overhead console to constantly monitor the wheelhouse.

The wheelhouse layout has the exhausts routed up through a central housing, leaving clear space so that the skipper has a direct line of vision to the towing arms at all times. An office area in the after starboard corner of the wheelhouse has two 17-inch monitors for administration and internet access. Communication equipment includes a Sailor 6310 MF/HF GMDSS 150W radio telephone, 2 x Sailor 6210 VHFs and a Jotron Emergency GMDSS Handheld VHF. Woodsons supplied the V-Sat communications system.

Summer Rose takes its name from the first scalloper John McAlister skippered, a 40ft wooden-hulled vessel with an 80hp Gardner engine, which he bought in 1977 from John McKerral of Campbeltown for £10,000.

Eight of the X-19 screen displays in the wheelhouse are switchable via an 8 x 8 HDMI matrix, while a further four are dedicated to CCTV and Simrad EVO2 Multifunction. A wide coverage CCTV system consisting of nine 4Megapixel HD cameras and a 16-way HD VR was installed by Electrotech Marine. An additional item is a HD through-hull propeller camera with the facility to be withdrawn into the vessel for the lens to be cleaned.

Streamlining the vessel’s appearance was also given considerable thought during the design process, as shown by the curved gantry aft of the wheelhouse roof, providing a wide surface area to mount the usual array of satellite domes, antennas and whips, instead of the usual style of aft mast.

Padmos supplied the four Mitsubishi main and auxiliary power units installed in Summer Rose’s engine room, further strengthening the relationship with Parkol. Mitsubishi engines installed on a number of new vessels built by Parkol Marine Engineering in recent years have been commissioned by Padmos engineers.

The main engine is a Mitsubishi S6R2-MPTK-F developing 480kW, coupled to a Reintjes WAF 374 7.09:1 reduction gearbox. As part of Summer Rose’s fully integrated hull and propulsion package, Ian Paton also designed the customised 2300mm diameter four-bladed propeller and matching nozzle fabricated by Parkol Marine Engineering. Fitted with Lip seals, the sterngear was machined by Premier Engineering.

This is a combination that delivers a maximum propeller speed of 190rpm and one of around 110rpm when towing at with the main engine running at 800rpm. Sea trials showed an average top steaming speed of 9.80 knots on engine trials, but more importantly, this setup comfortably towed eleven dredges each side into the tide with a fuel consumption of 38-40 litres per hour at 780-800rpm, which is significantly lower than that of Ròis Mhàiri and Star of Jura.

A Mitsubishi S6B3 variable speed hydraulic engine drives the scalloper’s main load sensing hydraulic system in conjunction with a Technodrive splitter box and two Kawasaki pumps. Installation of the vessel’s hydraulic system was completed in-house by Parkol Marine Engineering with stainless steel being used throughout.

Electrical power on Summer Rose comes from two Mitsubishi 6D16-T auxiliary engines each driving 125kVa Stamford 415/3/50 generators.

Three Victron 100amp chargers serve the three sets of batteries in the engine room. A similar Victron charger is situated in the wheelhouses to serve the lighting batteries, in addition to a 50amp GNDSS charger. Pearson Electrical of Hull was sub-contracted by Parkol Marine Engineering to undertake the electrical installation work on Summer Rose alongside the boatyard’s own electricians.

A total of 24,000 litres of fuel are carried in two wing tanks in the engine room and a double bottom tank under the fishroom floor. 4500 litres of fresh water are carried in the bulbous bow.