Page 58: of Maritime Reporter Magazine (May 2023)

New Products

Innovative products, technologies and concepts

Inside Schottel's New SRP-D

The performance of the Schottel tems. Its position-holding capabilities

RudderPropeller Dynamic SRP-D has were examined under extreme weather been con? rmed by external sources. conditions: high winds, strong currents

Initial investigations into the effect of and effective wave heights of 2.5m and thruster response on DP positioning 3.2m. The results of the simulations at were carried out in cooperation with DNV showed a signi? cantly improved

MARIN, based in the Netherlands, and positioning accuracy while halving the

Polish ship designer MMC. The results DP footprint. This permits successful obtained demonstrated much-improved gangway landing operations even in position accuracy and enhanced oper- rougher conditions, thus increasing the ability of the vessel. Further calcula- service life of the vessel throughout the tions made by DNV and simulations year. Furthermore, every single landing from a cooperation with VARD showed is performed more ef? ciently, saving that the SRP-D improves the vessel’s time and fuel. Thanks to the lower gear- operational performance and environ- box that has an additional eight degrees mental impact, showing too that the DP downward tilt, the interaction between footprint can be signi? cantly reduced, propulsion unit and hull and the pro- coupled with expected fuel savings of peller ? ow interaction are reduced. As up to 30 percent depending on the op- established in the simulations, these op- erating point. timizations result in an increased thrust “The results presented in MARIN’s ef? ciency during DP. Depending on the dynamic DP simulations indicated a thruster’s operational direction, simula- signi? cant bene? t as regards the op- tion also revealed up to 50 percent less erability of the vessel," said Michal thrust loss and fewer forbidden zones.

Olko, VP and Chief Designer, MMC “The CFD results of the inclined gear

Ship Design. In addition to the embed- box clearly show a signi? cantly reduced ded electric main drive (LE-Drive) and thruster hull interaction or Coanda ef- a propeller shaft with an eight-degree speed. The dynamic properties of the fect for zero-speed station-keeping," tilt, the SRP-D features a number of SRP were investigated within a time said Karl Randle, Principle Naval Ar- improvements, including reduced pro- domain level three analysis commis- chitect, VARD. "This is especially peller acceleration/deceleration times sioned by DNV. The simulation was evident for inward ? ow directions and and a high-speed azimuth steering sys- performed on the numerical model of areas where the ? ow interacts with or tem with reinforced gear components, a real Service Operation Vessel (SOV) ? ushes the skeg or other thrusters. www.schottel.de thus achieving double the rotational equipped with Schottel propulsion sys-

Permastar LED Floodlight

SONARAY, a manufacturer of propri- also UL 1598A listed so it can be used etary LED lighting products, announced outside in damp or wet environments.

PermaStar, a high ef? cacy, 500-watt The PermaStar is constructed with a du-

LED Flood Light that comes with a lim- rable die-cast aluminum housing and has ited lifetime warranty. new ? ood light is been treated with an anti-corrosive ? n- durable with IP66 and IK10 ratings, and ish to further help it withstand extremely is available in a range of beam angles harsh environments. Available with beam and produces up to 67,000 lumens in the angles of 22, 45, or 70-degrees.

SONARAY www.dascomamericas.com 45-degree angle model. The PermaStar is 58 Maritime Reporter & Engineering News • May 2023

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