EXHIBIT 99.1 DIAMOND OFFSHORE DRILLING, INC. RIG STATUS REPORT AS OF SEPTEMBER 16, 2003 RATED RIG NAME WATER DEPTH DESIGN LOCATION STATUS* OPERATOR - ----------------------------------------------------------------------------------------------------------------- DOMESTIC DEEPWATER SEMISUBMERSIBLES (6) - ----------------------------------------------------------------------------------------------------------------- Ocean Quest 3,500' Victory Class GOM Idle DODI - ----------------------------------------------------------------------------------------------------------------- Ocean Star 5,500' Victory Class GOM Contracted Kerr McGee - ----------------------------------------------------------------------------------------------------------------- Ocean America 5,500' Ocean Odyssey GOM Contracted Devon - ----------------------------------------------------------------------------------------------------------------- Ocean Valiant 5,500' Ocean Odyssey GOM Contracted Devon - ----------------------------------------------------------------------------------------------------------------- Ocean Victory 5,500' Victory Class GOM Contracted Newfield ----------------------------------------------------------------------------------------------------------------- Ocean Confidence 7,500' DP Aker H-3.2 Modified GOM Contracted BP - ----------------------------------------------------------------------------------------------------------------- DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES (4) - ----------------------------------------------------------------------------------------------------------------- Ocean Concord 2,200' F&G SS-2000 GOM Contracted Kerr McGee - ----------------------------------------------------------------------------------------------------------------- Ocean Lexington 2,200' F&G SS-2000 GOM Contracted Walter Oil & Gas - ----------------------------------------------------------------------------------------------------------------- Ocean Saratoga 2,200' F&G SS-2000 GOM Contracted LLOG - ----------------------------------------------------------------------------------------------------------------- Ocean Yorktown 2,850' F&G SS-2000 GOM Shipyard preparing for DODI PEMEX work - ----------------------------------------------------------------------------------------------------------------- DOMESTIC JACKUPS (11) - ----------------------------------------------------------------------------------------------------------------- Ocean Crusader 200' Mat Cantilever GOM Contracted Walter Oil & Gas - ----------------------------------------------------------------------------------------------------------------- Ocean Drake 200' Mat Cantilever GOM Idle DODI - ----------------------------------------------------------------------------------------------------------------- Ocean Columbia 250' Independent Leg GOM Contracted ADTI/Tana - ----------------------------------------------------------------------------------------------------------------- Ocean Spartan 300' Independent Leg GOM Contracted Stone Energy Cantilever - ----------------------------------------------------------------------------------------------------------------- Ocean Spur 300' Independent Leg GOM Contracted Entre/Howard Cantilever - ----------------------------------------------------------------------------------------------------------------- Ocean King 300' Independent Leg GOM Contracted BP America Cantilever - ----------------------------------------------------------------------------------------------------------------- Ocean Nugget 300' Independent Leg GOM Contracted Taylor Energy Cantilever - ----------------------------------------------------------------------------------------------------------------- Ocean Summit 300' Independent Leg GOM Contracted El Paso Cantilever - ----------------------------------------------------------------------------------------------------------------- Ocean Warwick 300' Independent Leg GOM Contracted ADTI/Newfield Cantilever - ----------------------------------------------------------------------------------------------------------------- Ocean Titan 350' Independent Leg Slot GOM Shipyard for cantilever DODI upgrade - ----------------------------------------------------------------------------------------------------------------- Ocean Tower 350' Independent Leg GOM Contracted Denbury Cantilever - ----------------------------------------------------------------------------------------------------------------- 1 RATED RIG NAME WATER DEPTH DESIGN LOCATION STATUS* OPERATOR - ----------------------------------------------------------------------------------------------------------------- INTERNATIONAL SEMISUBMERSIBLES (16) - ----------------------------------------------------------------------------------------------------------------- MEXICO - ----------------------------------------------------------------------------------------------------------------- Ocean Ambassador 1,100' Bethlehem SS-2000 GOM Contracted PEMEX - ----------------------------------------------------------------------------------------------------------------- Ocean Whittington 1,500' Aker H-3 GOM Contracted PEMEX - ----------------------------------------------------------------------------------------------------------------- Ocean Worker 3,500' F&G 9500 Enhanced GOM Contracted PEMEX Pacesetter - ----------------------------------------------------------------------------------------------------------------- AFRICA - ----------------------------------------------------------------------------------------------------------------- Ocean Patriot 1,500' Bingo 3000 South Africa Idle DODI - ----------------------------------------------------------------------------------------------------------------- NORTH SEA - ----------------------------------------------------------------------------------------------------------------- Ocean Nomad 1,200' Aker H-3 North Sea Contracted PetroCanada - ----------------------------------------------------------------------------------------------------------------- Ocean Guardian 1,500' Earl & Wright Sedco 711 North Sea Contracted Shell Series - ----------------------------------------------------------------------------------------------------------------- Ocean Princess 1,500' Aker H-3 North Sea Contracted Talisman - ----------------------------------------------------------------------------------------------------------------- Ocean Vanguard 1,500' Bingo 3000 North Sea Idle DODI - ----------------------------------------------------------------------------------------------------------------- AUSTRALASIA - ----------------------------------------------------------------------------------------------------------------- Ocean Bounty 1,500' Victory Class Australia Contracted Inpex - ----------------------------------------------------------------------------------------------------------------- Ocean Epoch 1,640' Korkut Australia Contracted Santos - ----------------------------------------------------------------------------------------------------------------- Ocean General 1,640' Korkut Vietnam Contracted PetroVietnam - ----------------------------------------------------------------------------------------------------------------- Ocean Baroness 7,000' Victory Class Indonesia Contracted Unocal - ----------------------------------------------------------------------------------------------------------------- Ocean Rover 7,000' Victory Class Singapore Contracted Murphy - ----------------------------------------------------------------------------------------------------------------- BRAZIL - ----------------------------------------------------------------------------------------------------------------- Ocean Yatzy 3,300' DP DYVI Super Yatzy Brazil Contracted Petrobras - ----------------------------------------------------------------------------------------------------------------- Ocean Winner 3,500' Aker H-3 Brazil Contracted Petrobras - ----------------------------------------------------------------------------------------------------------------- Ocean Alliance 5,000' Alliance Class Brazil Contracted Petrobras - ----------------------------------------------------------------------------------------------------------------- 2 RATED RIG NAME WATER DEPTH DESIGN LOCATION STATUS* OPERATOR - ----------------------------------------------------------------------------------------------------------------- INTERNATIONAL DRILLSHIPS (1) - ----------------------------------------------------------------------------------------------------------------- Ocean Clipper 7,500' DP Fluor/Mitsubishi Brazil Contracted Petrobras - ----------------------------------------------------------------------------------------------------------------- INTERNATIONAL JACKUPS (2) - ----------------------------------------------------------------------------------------------------------------- Ocean Sovereign 250' Independent Leg Indonesia Idle DODI Cantilever - ----------------------------------------------------------------------------------------------------------------- Ocean Heritage 300' Independent Leg Indonesia Idle DODI Cantilever - ----------------------------------------------------------------------------------------------------------------- COLD STACKED (7) - ----------------------------------------------------------------------------------------------------------------- Ocean Liberator 600' Aker H-3 S. Africa Cold Stacked DODI - ----------------------------------------------------------------------------------------------------------------- Ocean Century 800' Korkut GOM Cold Stacked DODI - ----------------------------------------------------------------------------------------------------------------- Ocean Prospector 1,700' Victory Class GOM Cold Stacked DODI - ----------------------------------------------------------------------------------------------------------------- Ocean Champion 250' Mat Slot GOM Cold Stacked DODI - ----------------------------------------------------------------------------------------------------------------- Ocean Endeavor 2,000' Victory Class GOM Cold Stacked DODI - ----------------------------------------------------------------------------------------------------------------- Ocean Voyager 3,200' Victory Class GOM Cold Stacked DODI - ----------------------------------------------------------------------------------------------------------------- Ocean New Era 1,500' Korkut GOM Cold Stacked DODI - ----------------------------------------------------------------------------------------------------------------- NOTES: * ASSUME 95-98% UTILIZATION RATE DURING CONTRACTED PERIODS TO ALLOW FOR NORMAL EQUIPMENT REPAIR DOWNTIME GOM = Gulf of Mexico ** TABLE CONTINUED ** 3 DAYRATE RIG NAME CURRENT TERM (000S) START DATE - ----------------------------------------------------------------------------------------- DOMESTIC DEEPWATER SEMISUBMERSIBLES (6) - ----------------------------------------------------------------------------------------- Ocean Quest - - - - ----------------------------------------------------------------------------------------- Ocean Star nine month term work mid 80's early March 2003 - ----------------------------------------------------------------------------------------- Ocean America one well upper 60's early June 2003 - ----------------------------------------------------------------------------------------- Ocean Valiant one well upper 50's late April 2003 - ----------------------------------------------------------------------------------------- Ocean Victory two wells (Saratoga low 40's late July 2003 substitution) - ----------------------------------------------------------------------------------------- Ocean Confidence five-year term 170's early January 2001 - ----------------------------------------------------------------------------------------- DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES (4) - ----------------------------------------------------------------------------------------- Ocean Concord second of two wells mid 40's early July 2003 - ----------------------------------------------------------------------------------------- Ocean Lexington first of two wells plus low 40's late August option - ----------------------------------------------------------------------------------------- Ocean Saratoga one well plus option low 40's late August - ----------------------------------------------------------------------------------------- Ocean Yorktown - - - - ----------------------------------------------------------------------------------------- DOMESTIC JACKUPS (11) - ----------------------------------------------------------------------------------------- Ocean Crusader first of two wells low 20's late June 2003 - ----------------------------------------------------------------------------------------- Ocean Drake - - - - ----------------------------------------------------------------------------------------- Ocean Columbia one well mid 20's mid August 2003 - ----------------------------------------------------------------------------------------- Ocean Spartan one well plus option mid 20's late July 2003 - ----------------------------------------------------------------------------------------- Ocean Spur first of three wells upper 20's late August 2003 - ----------------------------------------------------------------------------------------- Ocean King multiple wells low 30's early April 2003 - ----------------------------------------------------------------------------------------- Ocean Nugget first of three well mid 20's mid September 2003 extension - ----------------------------------------------------------------------------------------- Ocean Summit two wells plus option upper 20's late August 2003 - ----------------------------------------------------------------------------------------- Ocean Warwick one well plus option mid 20's late August 2003 - ----------------------------------------------------------------------------------------- Ocean Titan - - - - ----------------------------------------------------------------------------------------- Ocean Tower first of four wells plus mid 30's late August 2003 option - ----------------------------------------------------------------------------------------- 1 DAYRATE RIG NAME CURRENT TERM (000S) START DATE - ----------------------------------------------------------------------------------------- INTERNATIONAL SEMISUBMERSIBLES (16) - ----------------------------------------------------------------------------------------- MEXICO - ----------------------------------------------------------------------------------------- Ocean Ambassador four year term work mid 50's late July 2003 - ----------------------------------------------------------------------------------------- Ocean Whittington four year term work low 60's late July 2003 - ----------------------------------------------------------------------------------------- Ocean Worker four year term work upper 60's mid August 2003 - ----------------------------------------------------------------------------------------- AFRICA - ----------------------------------------------------------------------------------------- Ocean Patriot - - - - ----------------------------------------------------------------------------------------- NORTH SEA - ----------------------------------------------------------------------------------------- Ocean Nomad one well mid 40's mid June 2003 - ----------------------------------------------------------------------------------------- Ocean Guardian one year plus one year low 50's early April 2003 option - ----------------------------------------------------------------------------------------- Ocean Princess second well low 40's late May 2003 - ----------------------------------------------------------------------------------------- Ocean Vanguard _ _ _ - ----------------------------------------------------------------------------------------- AUSTRALASIA - ----------------------------------------------------------------------------------------- Ocean Bounty three wells plus low 70's mid June 2003 option for two - ----------------------------------------------------------------------------------------- Ocean Epoch one well plus option low 60's mid September 2003 - ----------------------------------------------------------------------------------------- Ocean General last of three wells plus mid 50's early August 2003 option - ----------------------------------------------------------------------------------------- Ocean Baroness 400 days plus option 110's late March 2003 - ----------------------------------------------------------------------------------------- Ocean Rover Three wells plus option 110s mid July 2003 - ----------------------------------------------------------------------------------------- BRAZIL - ----------------------------------------------------------------------------------------- Ocean Yatzy five-year term plus option 120's early November 1998 - ----------------------------------------------------------------------------------------- Ocean Winner one year extension low 60's early November 2002 - ----------------------------------------------------------------------------------------- Ocean Alliance four-year contract 110's early September 2000 - ----------------------------------------------------------------------------------------- 2 DAYRATE RIG NAME CURRENT TERM (000S) START DATE - ----------------------------------------------------------------------------------------- INTERNATIONAL DRILLSHIPS (1) - ----------------------------------------------------------------------------------------- Ocean Clipper one-year extension 100's mid February 2003 - ----------------------------------------------------------------------------------------- INTERNATIONAL JACKUPS (2) - ----------------------------------------------------------------------------------------- Ocean Sovereign - - - - ----------------------------------------------------------------------------------------- Ocean Heritage - - - - ----------------------------------------------------------------------------------------- COLD STACKED (7) - ----------------------------------------------------------------------------------------- Ocean Liberator - - - - ----------------------------------------------------------------------------------------- Ocean Century - - - - ----------------------------------------------------------------------------------------- Ocean Prospector - - - - ----------------------------------------------------------------------------------------- Ocean Champion - - - - ----------------------------------------------------------------------------------------- Ocean Endeavor - - - - ----------------------------------------------------------------------------------------- Ocean Voyager - - - - ----------------------------------------------------------------------------------------- Ocean New Era - - - - ----------------------------------------------------------------------------------------- NOTES: * ASSUME 95-98% UTILIZATION RATE DURING CONTRACTED PERIODS TO ALLOW FOR NORMAL EQUIPMENT REPAIR DOWNTIME GOM = Gulf of Mexico ** TABLE CONTINUED ** 3 RIG NAME ESTIMATED END DATE FUTURE CONTRACT AND OTHER INFORMATION - --------------------------------------------------------------------------------------------------- DOMESTIC DEEPWATER SEMISUBMERSIBLES (6) - --------------------------------------------------------------------------------------------------- Ocean Quest - available. - --------------------------------------------------------------------------------------------------- Ocean Star late October 2003 available. - --------------------------------------------------------------------------------------------------- Ocean America late September 2003 available. - --------------------------------------------------------------------------------------------------- Ocean Valiant late September 2003 available. - --------------------------------------------------------------------------------------------------- Ocean Victory mid September 2003 available. - --------------------------------------------------------------------------------------------------- Ocean Confidence early January 2006 available. - --------------------------------------------------------------------------------------------------- DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES (4) - --------------------------------------------------------------------------------------------------- Ocean Concord late October 2003 one well extension; available. - --------------------------------------------------------------------------------------------------- Ocean Lexington mid October 2003 available. - --------------------------------------------------------------------------------------------------- Ocean Saratoga mid October 2003 available. - --------------------------------------------------------------------------------------------------- Ocean Yorktown - Low bid on 1,371 day contract with PEMEX in mid 40's beginning Oct. 25, 2003 and ending mid July 2007 -- signature pending; available. - --------------------------------------------------------------------------------------------------- DOMESTIC JACKUPS (11) - --------------------------------------------------------------------------------------------------- Ocean Crusader early November 2003 One well plus option with Stone in mid 20's beginning early November and ending mid January 2004; available. - --------------------------------------------------------------------------------------------------- Ocean Drake - Survey; available early Oct. - --------------------------------------------------------------------------------------------------- Ocean Columbia late September 2003 One well with ADTI/Seneca in upper 20's beginning late September and ending mid October 2003; available. - --------------------------------------------------------------------------------------------------- Ocean Spartan late October 2003 available. - --------------------------------------------------------------------------------------------------- Ocean Spur mid October 2003 available. - --------------------------------------------------------------------------------------------------- Ocean King early November 2003 available. - --------------------------------------------------------------------------------------------------- Ocean Nugget mid December 2003 available. - --------------------------------------------------------------------------------------------------- Ocean Summit late October 2003 available. - --------------------------------------------------------------------------------------------------- Ocean Warwick early October 2003 available. - --------------------------------------------------------------------------------------------------- Ocean Titan - Cantilever upgrade ending mid December 2003. - --------------------------------------------------------------------------------------------------- Ocean Tower late December 2003 available. - --------------------------------------------------------------------------------------------------- 1 RIG NAME ESTIMATED END DATE FUTURE CONTRACT AND OTHER INFORMATION - --------------------------------------------------------------------------------------------------- INTERNATIONAL SEMISUBMERSIBLES (16) - --------------------------------------------------------------------------------------------------- MEXICO - --------------------------------------------------------------------------------------------------- Ocean Ambassador mid December 2007 available. - --------------------------------------------------------------------------------------------------- Ocean Whittington early October 2006 available. - --------------------------------------------------------------------------------------------------- Ocean Worker late July 2007 available. - --------------------------------------------------------------------------------------------------- AFRICA - --------------------------------------------------------------------------------------------------- Ocean Patriot - available. - --------------------------------------------------------------------------------------------------- NORTH SEA - --------------------------------------------------------------------------------------------------- Ocean Nomad late September 2003 available. - --------------------------------------------------------------------------------------------------- Ocean Guardian late March 2004 available. - --------------------------------------------------------------------------------------------------- Ocean Princess early November 2003 First option declared plus option with Talisman in low 40s beginning early November 2003 and ending mid January 2004. - --------------------------------------------------------------------------------------------------- Ocean Vanguard _ available. - --------------------------------------------------------------------------------------------------- AUSTRALASIA - --------------------------------------------------------------------------------------------------------- Ocean Bounty mid March 2004 available. - --------------------------------------------------------------------------------------------------------- Ocean Epoch mid December 2003 available. - --------------------------------------------------------------------------------------------------------- Ocean General early October 2003 available. - --------------------------------------------------------------------------------------------------------- Ocean Baroness early May 2004 available. - --------------------------------------------------------------------------------------------------------- Ocean Rover late December 2003 available. - --------------------------------------------------------------------------------------------------------- BRAZIL - --------------------------------------------------------------------------------------------------------- Ocean Yatzy early November 2003 Scheduled for survey in 4th Qtr. Estimated downtime 30 days. - --------------------------------------------------------------------------------------------------------- Ocean Winner late October 2004 Scheduled for survey in 4th Qtr. Estimated downtime 60 days. - --------------------------------------------------------------------------------------------------------- Ocean Alliance early September 2004 Scheduled for survey in 1st Qtr.'04 Estimated downtime 60 days. - --------------------------------------------------------------------------------------------------------- 2 RIG NAME ESTIMATED END DATE FUTURE CONTRACT AND OTHER INFORMATION - -------------------------------------------------------------------------------------------------- INTERNATIONAL DRILLSHIPS (1) - -------------------------------------------------------------------------------------------------- Ocean Clipper early January 2004 available. - -------------------------------------------------------------------------------------------------- INTERNATIONAL JACKUPS (2) - -------------------------------------------------------------------------------------------------- Ocean Sovereign - available. - --------------------------------------------------------------------------------------------------- Ocean Heritage - available. - -------------------------------------------------------------------------------------------------- COLD STACKED (7) - -------------------------------------------------------------------------------------------------- Ocean Liberator - Cold stacked Nov. '02. - -------------------------------------------------------------------------------------------------- Ocean Century - Cold stacked July '98. - -------------------------------------------------------------------------------------------------- Ocean Prospector - Cold stacked Oct. '99. - -------------------------------------------------------------------------------------------------- Ocean Champion - Cold Stacked Feb. '02. - -------------------------------------------------------------------------------------------------- Ocean Endeavor - Cold stacked March '02. - -------------------------------------------------------------------------------------------------- Ocean Voyager - Cold stacked March '02. - -------------------------------------------------------------------------------------------------- Ocean New Era - Cold stacked Dec. '02. - -------------------------------------------------------------------------------------------------- NOTES: * ASSUME 95-98% UTILIZATION RATE DURING CONTRACTED PERIODS TO ALLOW FOR NORMAL EQUIPMENT REPAIR DOWNTIME GOM = Gulf of Mexico ** TABLE COMPLETE ** 3