Page 50: of Maritime Reporter Magazine (April 2020)

Tech Files

Surface Preparation, Coatings & Corrosion Control

Surface Prep

Jotun Debuts Hull Skater

Spiderjet M Edge

The Spiderjet M Edge is the newest addition to

Hammelmann’s family for semi-automatic surface preparation and paint removal. The unit is attached to the work surface with permanent magnets and is supported by the high-power vacuum system which immediately retrieves all waste water and removed solids and allows for further processing. The drive wheels are placed directly behind the Aquablast

Jotun surface cleaner enabling a particularly narrow con-

Jotun launched the Hull Skating Solutions (HSS), designed to struction while using the full working width of 15 give vessel owners a proactive hull cleaning solution. Technol- in. As a result, it is great for removing paint from ogy partners in the project include Kongsberg, Semcon, DNV GL, intermediate surfaces or working around narrow

Telenor, as well as shipping companies Wallenius Wilhelmsen, Berge contours and on edges. With an operating pressure

Bulk and Maersk. HSS is designed to provide condition monitor- of up to 43,500 psi and a fow rate of 13 gpm the ing, inspection and cleaning, technical service and performance and

Spiderjet M Edge delivers the required power for service level guarantees. It is touted by Jotun as using a proprietary reliable and thorough paint removal with results algorithm and big data to accurately predict fouling development that meet or supersede the quality requirements set and cleaning schedules. While there have been several robotic hull by international paint manufacturers and standards cleaning solutions used in the industry, Jotun is calling the HSS ro- authorities for the application of new coatings. botic tech unique in that it has been purposely designed for proactive cleaning, and in combination with the SeaQuantum Skate antifouling and a set of services, the HSS will help ship operators combat early stages of fouling. HullSkater stays on the hull via magnetic wheels, each equipped with electric motors for propulsion and steering. The vehicle has several cameras and sensors, supporting the operator with data for navigation and documenting fouling on the ship hull.

The motorized brush are intended to keep the hull free from fouling without causing erosion or damage to the hull coating. The vehicle is connected to the operator’s control center through an umbilical and can be operated remotely for vessels anywhere in the world with 4G coverage. Inspection and proactive cleaning of a hull will normally take around 2 to 8 hours depending on size and condition.

Hammelmann

Heavy

Lifters

Appleton FPSO Cranes JonRie InterTech Standard Duty Lifting Beam

Appleton Marine recently JonRie InterTech debuted its Harrington Hoists introduced shipped a large offshore new “240” Escort Winch for its HSDLB Standard Duty Lift-

Deck Machinery, knuckle and fxed boom crane 5,000-6,000 HP tugs last ing Beam which is designed to Singapore for installation on year. Currently under construc- for low headroom applications.

Winches & Cranes an FPSO headed for offshore tion for McAllister Towing and Model HSDLB is available from

Guyana, the second in the Seabulk Towing. Line pulls ½ thru 40 Ton capacities with courtry utilizing Appleton Ma- from 50,000 lbs. to 100,000 outside spreads from 3 to 30 rine cranes. lbs.; line speeds to 150 fpm. feet. 50 Maritime Reporter & Engineering News • April 2020