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In 1923, beginning with a small land-based steam rig powered by two 45-horsepower boilers, brothers Charlie and Arch Rowan founded Rowan Drilling Company. Rowan has grown and adapted to serve the emerging needs of the oil and gas industry.  Other milestones include:

2010
Rowan completes acquisition of Skeie Drilling & Production ASA and obtains three North Sea Compliant (N-Class) jack-up rigs.
2010
Rowan's first EXL (enhanced LeTourneau Super 116E) class rig is delivered.
2008
LeTourneau delivers Rowan's first workhorse 240-C class jack-up rig.
2004
LeTourneau delivers Rowan's first Tarzan Class rig
1998
LeTourneau delivers Rowan's first Super Gorilla class jack-up rig
1983
Delivery of its first Gorilla class jack-up further enhances the Rowan fleet
1978
Rowan's first cantilever jack-up rig is delivered
1971
Rowan Drilling Company becomes Rowan Companies, Inc.
1970
The company begins jack-up rig drilling and enhancements to its fleet
1967
Rowan goes public with an initial offering of 323,000 shares
1957
The first Rowan crews are sent to drill in Alaska
1954
Rowan undertakes first platform-mounted drilling job in deep water
1935
The company buys its first diesel electric rig
1924
Rowan brings in Simmons No. 1, starting an oil boom in Wortham, TX