Page 28: of Maritime Reporter Magazine (March 1998)

GULF COAST UPDATE

Atlantic Marine Celebrates Dedication Of Glomar Explorer

Glomar Marine recently dedicat- ed its ultra deepwater drillship

Glomar Explorer at Atlantic

Marine's Mobile, Ala., facility. The shipyard is currently nearing com- pletion of the third and final phase of the re-activation and conversion of Glomar Explorer from a Navy vessel. The first two phases of the project were carried out at West

Coast facilities prior to the vessel's transit around Cape Horn to

Mobile. The vessel was expected to leave Mobile last month for its first drilling assignment in the Gulf of

Mexico.

Designed and built by Global

Marine for the U.S. Navy in 1972,

Glomar Explorer was part of the

Naval fleet for the last 26 years.

Global Marine now has a 30-year lease with the Navy for use of the converted vessel.

Part III of the conversion at

Atlantic Marine took five months and included: •Installation of the vessel's sub- structure, drillfloor, active mud house, riser house and elevator and all drill systems piping above the main deck;

Glomar Explorer

Main Particulars

Length, o.o 618.8 ft. (188.6 m)

Beom 115.8 ft. (35.3 m)

Depth 51 ft. (15.5 m)

Draft 35 ft. (10.7 ml

Displacement 50,500 It

Design Operating Conditions

Maximum water depth 10,000 ft.

Maximum wind speed 100 knots

Maximum drilling depth 30,000 ft.

Extimated speed at full load 10 knots

Capacities and Loading Data

Maximum variable load 23,500 It

Drill water 50,600 bbls

Potable water 2,520 bbls

Fuel oil 49,500 bbls

Liquid mud 6,320 bbls

Bulk mud 36,000 cu. ft.

Bulk cement 11,160 tu. ft.

Living quarters 140 persons

Station Keeping Equipment System

Moio propulsion (2) fixed pitch variable speed reverse/reduction propellers, each powered by (3) 2,200 hp DC motors

Total hp 13,200 (5) tunnel thrusters each driven by a 2,000 hp DC motor; (6) retractable azimuthing thrusters each driven by 3,000 hp variable speed motor

Triple redundant DPS and acoustic back up positioning system

Total station keeping hp 35,200

Power Generation

EMD MP 16E9B diesel engines rated at 3,070 bhp, each driving a 2,200 kw, 4,160V

AC generator

Nordberg FS-1316-HSC 4,900 hp diesel engines each driving a 3,500 kW, 4,160V AC generator

Total hp 36,780

Drilling Equipment

Drawworks National 2040,4,000 hp

Mud Pumps (31 National 14-P-220

Derrick Enfob

Top drive National PS-2

Rotary Table National 1495

Drill Pipe Backer Westeck horizontal

Cranes (21 Seatrax 7228 and (214220 •Installation of a derrick capable of hoisting loads up to two million

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