Page 32: of Maritime Reporter Magazine (December 1995)

ballast of oil

The ca main d

Double slit type slot holes, reportedly for the first time in the world, were successfully incor- porated on both sides of the floors and the webframes in the double side and the double bottom tanks, with no collar plates. This tech- nique is designed to improve the structural strength and the corrosion prevention due to paint cracks.

For preventing corrosion in the sea water pipes, a polyethylene coating inside has been (Continued on page 39)

Maritime Reporter/Engineering News m Li rex a Diesel United, Ltd. supplied, DU-Sulzer 12RTA84C driving a six-bladed solid nickel alu- minum bronze propeller to provide an average speed of 23.5 knots. The vessel's cruising range is 20,900 nautical miles.

The Rhin&s containers are held on five deck tiers, and can accommodate 2,264 TEU in the hold and 2,479 TEU on deck.

OSK Line of Japan.

This new generation of containership strong lashing bridges arranged between es for effective securing of deck contaii five high, and for easy handling of tainers of the second tier on deck, form is designed to provide good well as good propulsion performam range of drafts. The vessel is at accept 400 reefer containers.

The 984-ft. (299.95-mi*6ssel is powered by :ch- of to

The Rhine is the last of a series of 4,800-

TEU class post panamax containerships which was developed specifically by IHI for customers which demanded larger, faster and more effi- cient containerships. Three sisters of the Rhine have been delivered to NYK Line and Mitsui

Rhin& Date

Length o.a 984 ft. (299.95 m)

Breadth 121.7 ft. (37.1 m) raft (mid) 42.6 ft. (13 m) /DWT 62,905

Main engine DU-Sulzer 12RTA84C

Propeller Mitsubishi

Tailshaft Nippon Cast Iron Works

Generator engine Daihatsu Diesel

Bowthruster KHI Kawasaki

Emergency generator..... ..Daihatsu Diesel

Diesel generator Taiyo Electric

Shaft generator Taiyo Electric

Engine control Terasaki Electric Co.

Steering Control Yokogawa Electric

Windlass ^ Fukushima

Mooring ....Fukushim

VHE-MdW^T. Furuno

Gyro compass Yokogawa Electronic

GPS Sena Co.

Autopilot Yokogawa Electronic

Furuno

The Murex is the first of the five double hull 298,300-dwt VLCCs for Shell International

Shipping Ltd., from Daewoo. The Daewoo design has been extensively researched and developed based on a structural design philoso- phy "stronger, safer ships," complying with all of the latest international regulations on safety and environmental protection, such as I MO Marpol (13F) and OPA 90. The ship uses the double skin space to totally separate the cargo tanks from the sea and to provide the five U-shaped segregated water ballast tanks, connected to the double bottom tanks. The width of the double side tanks is 11.5 ft. (3.52 m) and the depth of the double bottom is 9.8 ft. (3 m), compared to the minimum values of 6.6 ft. (2 m) demanded in Marpol 13F. Many features have also been included to improve the fatigue strength, and as a result, the fatigue life of hull structural ele- ments is guaranteed for 25 years. To achieve these ends: mild steel content has been increased to 73.3 percent; the use of T-bar type longitudinals has been increased to around 90 percent, from a normal proportion of about 60 percent; and bulb flats are used instead of inverted-angle stiffeners in the water ballast tanks to improve the quality of the coating.

Similarly, much attention was paid to the

Ef of the correct coating. Light colored, epoxy paint is coated in the water to make it easier to detect leakage >n through staining of paint, film thickness is 300 microns. The has been coated with a highly dam- age-resistant type zinc silicate from Hempel, and the thickness of coatings used has been increased to 850 microns, from the normal 600 microns for the main deck areas. The entire structure was designed, where possible, to min- imize free edges and to eliminate blind spots.