Jotun paint systems protect advanced new Ro-Ro

Citation

(1999), "Jotun paint systems protect advanced new Ro-Ro", Anti-Corrosion Methods and Materials, Vol. 46 No. 4. https://doi.org/10.1108/acmm.1999.12846dab.005

Jotun paint systems protect advanced new Ro-Ro

Jotun paint systems protect advanced new Ro-Ro

Keywords: Jotun, Marine corrosion, Coatings

Now with the Royal Fleet Auxiliary (RFA) rapid response force (RRF), Sea Centurian is the first of Stena Ro-Ro's advanced new "4-Runner" class, and has been protected throughout by Jotun paint systems (Plate 5).

Sea Centurian and its sister ship Sea Crusader are the first in a series of the "4-Runner" class to be built at the Viareggio yard of SocietÈ Esercizio Cantieri, and the MoD found it unnecessary to make any changes to the standard specification to meet its requirements for an RFA-operated RRF. The 12,350dwt vessels have a length overall of 182.6m, beam overall of 25.8m and a design draught of 6.6m. They have a speed of 22 knots and offer a vehicle lane length of 2,715m.

Jotun Paints manufactures a comprehensive range of marine coatings and, using carefully chosen products from this range, systems can be formulated to give the best possible protection for each differing working area of a vessel. The systems specified for the Sea Centurian are thought to be an excellent example.

For the hull below the waterline the Jotun system comprised "Marathon IQ" heavy-duty epoxy, "Safeguard" coal-tar epoxy and "Seavictor 50" tin-free antifouling. "Marathon IQ" is a high-build, solvent-free coating specifically formulated for resistance to extreme conditions, such as the abrasion likely to be suffered during ice-going voyages. "Seavictor 50" is a TBT-free self-polishing antifouling claiming effective protection for up to 48 months with improved control of green algae.

Plate 5 Sea Centurian

Blue topside areas of the Sea Centurian, together with her trailer-area sides and overheads, and decks outside the trailer area, are protected by "Jotamastic 87" epoxymastic and "Conseal Topcoat" semi-gloss acrylic. Jotun Paints is a world innovator in epoxymastics, and "Jotamastic 87" provides very good resistance to water, solvents and many chemicals. With a low solvent content and no isocyanate, this well-proven product has a much reduced environmental impact. It is novel in complying with current NORSOK standards. "Conseal Topcoat" is quick drying and has good resistance to chemicals and corrosion.

"Jotamastic 87" also provides the principal protection for the white topsides and superstructures of the Stena "4-Runner". On these areas, however, the finishing coat is "Jotabright Antistain", which reacts with rust staining to make it unobtrusive. On the trailerdeck and ramps, "Jotamastic 87" is used without a topcoat but, as on most other deck areas, an antiskid treatment was included at the surface preparation stage.

Visible internal vertical and overhead steel surfaces throughout the Sea Centurian are protected by a "Mammut" high-build urethane alkyd system, including a white topcoat which, as part of the system, is said to be certified not to spread surface flames.

Numerous other carefully formulated Jotun systems were used to protect surfaces in many varied areas of the Sea Centurian, including accommodation, ballast tanks, engine room, machinery, deck equipment, storage tanks and funnel.

For further details contact: Jotun-Henry Clark Ltd. Tel: +44 (0) 171 481 2741; Fax: (0) 171 265 1836; E-mail: linda.diamond@jotun.co.uk