Page 18: of Maritime Reporter Magazine (January 1999)

Ship & Boatbuilding Technology • Tankers

Chevron Takes Advanced

Ship From

Chevron recently took delivery of an advanced, 310,000-dwt

Very Large Crude Carrier (VLCC) from South Korea's

Samsung, a ship which embodies many of the design and equip ment technologies which are often discussed when the topic of next-generation tonnage arises. fl

Inside and out, Frank A. Shrontz (named for a Chevron direc tor) is a modern double hull tanker built to the exacting demands of Chevron and ABS. The hull, in fact, was con- structed to ABS SafeHull analysis (see story below), with addi- tional engineering analysis' (Dynamic Load Analysis and

Spectal Fatigue Analysis). The coating of the ballast tank is light color tar free epoxy throughout and the bottom of cargo tanks and up to one meter has been coated with epoxy to pro- tect against |he Microbial corrosion iittack. The design of this vessel follows traditional lines with five center tanks and five pairs of side cargo tanks (plus two slop tanks) included within a double skin hull. Double hull concept has been extended to

E.R. HFO tanks with cofferdam. Three grades of cargo can be handled simultaneously, using three steam turbine driven 5,000 cu. m./hr. pumps, arranged at a pump roonvat the for- ward end of the engine room. A vapor recovery line to the man- ifold has been provided to allow future lightering service. A gas sampling system for the ballast tanks has been provided to con- tinuously monitor for hydrocarbon gas in the Ballast t. commodation is provided foil 16 officers and 18 crew, in 30 sin ' tbin also allocated for s been completely sej g, in a deckhouse J bu linery installation " is • W 7S80MC main en; ive a FP propeller for ; for most services wi] [ig system using 2 late heat exchangers with 2

Circle 48 on Reader Service m - .

Frank A. Shrontz is a modern' doubi-e1 hull tanker built by

Samsung to the exacting demands of Chevron and iik A. Shrontz Main Particulars

Shipbuilder Samsung Heavy Industries

Type VLC liberian

Delivery date Dec. 7,1998

Length, o.a 1,092 1

Length, b.p l.k....1,043 ft. (318 m)

Breadth, molded 5| 190 ft. (58 m) ipth, molded to main deck 102.6 ft. (31.3 m) of double skin, side .Ml ft. (3.38 m) double skin, bottom .9.8 ft. (3 m)

B • - - - -160,036 9 ton

WT (design) Jl90,955

DOT (scantling) .309,999

Draft (design) . .70 2 ft.(21.4 m)

Draft (scantling) ^.73.8 ft. (22.5 m)

Speed, service (85% MCR) f. 15.3 knots

Cargo Capacity 350,600 cu. m.

Water Ballast ! W. 98,483 cu. m.

Fuel consumption 91.6 Mi/day ssification ........F. ABS % of high tensile steel .

Main engine Samsung MAN B&W 7S80MC

KW and rpm 34,650 bhp @ 79 rpm 'TwpeErT NiAlBr, FP

Cranes Norlift

Alternators Ssangyong B&W Holeby 8L23/30H

Boiler Mitsubishi

Mooring Equipment Pusnes

Cargo Tanks (no.) 17

Cargo Pumps Shinko

Cargo Control Samgong-Danfoss

Bridge Control Sperry VMS VT

Fire detection Autronica

Radars Sperry

LoronC Sperr

Waste disposal plant Hyundai Atlas

Sewage plant Hamworthy

ABS SafeHull: Technical Superiority By Design

The proliferation of advanced "engineered" solutions now available to ship designers and builders is truly mind boggling, given the rapid advancements forthcoming daily on the com- puter and software fronts. While it perhaps is often difficult to navigate through the clutter of new software offerings, and their true value to the end of building and maintaining safe, quality ships, the

American Bureau of Shipping (ABS) has its solid reputation and a burgeoning number of references which attest to the quality of its suite of advanced computerized design and life cycle products. The hull of Frank A. Shrontz, the new VLCC from Samsung for Chevron, was built using the ABS SafeHull analysis. Initially released in 1993, SafeHull has been upgraded and enhanced continually since, and at press time there were 85 ships in service which have utilized the pro- gram, and 175 ships on order.

Circle 47 on Reader Service Card 18 Maritime Reporter/Engineering News