Citation
(1998), "Protecting German cruise ship", Anti-Corrosion Methods and Materials, Vol. 45 No. 1. https://doi.org/10.1108/acmm.1998.12845aab.006
Publisher
:Emerald Group Publishing Limited
Copyright © 1998, MCB UP Limited
Protecting German cruise ship
Methods
Protecting German cruise ship
Built by Meeres Technik Wismar (MTW), and protected against both corrosion and fouling by Jotun Paints' coatings, the 12,000 gt cruise ship Columbus features many innovations and has been specifically designed to maximise operational versatility. Owned by the Munich-based ship-owning and investment concern Conti Reederei, she is suitable for both short excursions and longer ocean cruises, and will provide a high standard of comfort and atmosphere at a price affordable to a wide market.
The Columbus is the first cruise vessel to be built by MTR for some 25 years, and has an overall length of 144.00 m, a moulded breadth of 21.50 m and a design draught of 5.15 m. She will carry up to 423 passengers and a crew of 170 at a service speed of 18.5 knots. Her bow and hull have been strengthened to make her ideal for sailing in ice regions and, being able to pass through the St Lawrence Seaway, she will be the first cruise ship to operate on the great lakes since 1944.
The protection of cruise ships against fouling and arduous working conditions, calls for specialist knowledge in order to specify optimum coating systems, each of which comprises a carefully chosen combination of individual products. The systems specified for the Columbus illustrate the flexibility with which Jotun coatings can be combined into systems designed for specific working conditions in each part of a vessel.
The
12,000 gt cruise ship Columbus is designed for maximum operational
flexibility, and is suitable for both short excursions and longer ocean cruises.
Jotun coating systems are protecting her against both corrosion and fouling
Jotun Paints is a world leader in the development of epoxymastic coatings and, below the waterline, the hull of the Columbus has been protected against corrosion by Wintergrade versions of Jotun's premium surface-tolerant epoxymastics, Jotamastic 87 and Jotamastic 87 Aluminium. The Wintergrade versions, which can be used at temperatures down to -5°C, ensured quick curing at the low application temperatures. They have also been well proven on the hulls of vessels working in ice.
The Wintergrade Jotamastic 87 was followed by Vinyguard Silvergrey 88 quickdrying non-tar, modified vinyl primer, and Seamate HB 66 - Jotun's top-of-therange, selfpolishing antifouling. Seamate HB 66 is reported to be ideal for cruise ships and other vessels that may be stationary in waters with a high content of fouling organisms.
The vessel's topsides, below the 5-metre line, were primed with Resist GTI moisture-curing, ethyl-silicate, zinc-rich formulation which, combined with an epoxy system, claims optimum protection against corrosion. In the case of the Columbus, Wintergrade Jotamastic 87 was used, followed by Hardtop AS polyurethane topcoat to give a durable gloss and excellent colour retention in aggressive conditions.
Among other areas of the Columbus which have received Jotun protection are the ballast tanks which were treated with Penguard HB - an epoxy coating with a high molecular weight. This pure epoxy treatment, rather than Jotun's specialist Balloxy HB Light epoxymastic ballast-tank coating, was needed because the ballast tanks of the Columbus will often contain "grey" water from her various water-using facilities and services.
Details are available from Jotun-Henry Clark Ltd, Matheson House, 142 Minories, London, EC3N 1LS. Tel: 0171 481 2741; Fax: 0171 265 1836.