EXHIBIT 99.1 DIAMOND OFFSHORE DRILLING, INC. RIG STATUS REPORT AS MARCH 2, 2004 RIG NAME WD DESIGN LOCATION STATUS* OPERATOR - ---------------------------------------------------------------------------------------------- DOMESTIC DEEPWATER SEMISUBMERSIBLES (6) - ---------------------------------------------------------------------------------------------- Ocean Quest 3,500' Victory Class GOM Contracted Noble Energy - ---------------------------------------------------------------------------------------------- Ocean Star 5,500' Victory Class GOM Idle DODI - ---------------------------------------------------------------------------------------------- Ocean America 5,500' Ocean Odyssey GOM Contracted W&T Offshore - ---------------------------------------------------------------------------------------------- Ocean Valiant 5,500' Ocean Odyssey GOM Contracted ENI - ---------------------------------------------------------------------------------------------- Ocean Victory 5,500' Victory Class GOM Contracted Spinnaker Exploration - ---------------------------------------------------------------------------------------------- Ocean Confidence 7,500' DP Aker H-3.2 GOM Contracted BP Modified - ---------------------------------------------------------------------------------------------- DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES (3) - ---------------------------------------------------------------------------------------------- Ocean Concord 2,200' F&G SS-2000 GOM Idle DODI - ---------------------------------------------------------------------------------------------- Ocean Lexington 2,200' F&G SS-2000 GOM Contracted Walter Oil & Gas - ---------------------------------------------------------------------------------------------- Ocean Saratoga 2,200' F&G SS-2000 GOM Contracted LLOG - ---------------------------------------------------------------------------------------------- DOMESTIC JACKUPS (11) - ---------------------------------------------------------------------------------------------- Ocean Crusader 200' Mat Cantilever GOM Contracted Stone Energy - ---------------------------------------------------------------------------------------------- Ocean Drake 200' Mat Cantilever GOM Contracted ADTI/CMI - ---------------------------------------------------------------------------------------------- Ocean Columbia 250' Independent Leg GOM Contracted ADTI/Helis Cantilever - ---------------------------------------------------------------------------------------------- Ocean Spartan 300' Independent Leg GOM Contracted LLOG Cantilever - ---------------------------------------------------------------------------------------------- Ocean Spur 300' Independent Leg GOM Contracted Forest Oil 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 Chevron/Texaco Cantilever - ---------------------------------------------------------------------------------------------- Ocean Warwick 300' Independent Leg GOM Contracted Petroquest Cantilever - ---------------------------------------------------------------------------------------------- Ocean Titan 350' Independent Leg GOM Contracted Chevron/Texaco Cantilever - ---------------------------------------------------------------------------------------------- Ocean Tower 350' Independent Leg GOM Contracted SDC/Denbury Cantilever - ---------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------- INTERNATIONAL SEMISUBMERSIBLES (17) - ---------------------------------------------------------------------------------------------- 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 - ---------------------------------------------------------------------------------------------- Ocean Yorktown 2,850' F&G SS-2000 GOM Contracted PEMEX - ---------------------------------------------------------------------------------------------- - ---------------------------------------------------------------------------------------------- AFRICA - ---------------------------------------------------------------------------------------------- Ocean Nomad 1,200' Aker H-3 Mobe to Contracted Premier Guinea Bissau - ---------------------------------------------------------------------------------------------- Ocean Patriot 1,500' Bingo 3000 South Africa Idle DODI - ---------------------------------------------------------------------------------------------- NORTH SEA - ---------------------------------------------------------------------------------------------- Ocean Guardian 1,500' Earl & Wright North Sea Contracted Shell Sedco 711 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 NZOP - ---------------------------------------------------------------------------------------------- Ocean Epoch 1,640' Korkut Australia Contracted Santos - ---------------------------------------------------------------------------------------------- Ocean General 1,640' Korkut Vietnam Contracted P.V.E&P - ---------------------------------------------------------------------------------------------- Ocean Baroness 7,000' Victory Class Indonesia Contracted Unocal - ---------------------------------------------------------------------------------------------- Ocean Rover 7,000' Victory Class Singapore Contracted Murphy - ---------------------------------------------------------------------------------------------- 2 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 - ---------------------------------------------------------------------------------------------- INTERNATIONAL DRILLSHIPS (1) - ---------------------------------------------------------------------------------------------- Ocean Clipper 7,500' DP Fluor/Mitsubishi Brazil Contracted Petrobras - ---------------------------------------------------------------------------------------------- INTERNATIONAL JACKUPS (2) - ---------------------------------------------------------------------------------------------- Ocean Sovereign 250' Independent Leg Indonesia Contracted Santos Cantilever - ---------------------------------------------------------------------------------------------- Ocean Heritage 300' Independent Leg Mobe to Ecuador Contracted Noble Energy Cantilever - ---------------------------------------------------------------------------------------------- COLD STACKED (5) - ---------------------------------------------------------------------------------------------- Ocean Liberator 600' Aker H-3 S. Africa 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 RIG NAME CURRENT TERM DAYRATE (000S) START DATE - ------------------------------------------------------------------------------- DOMESTIC DEEPWATER SEMISUBMERSIBLES (6) - ------------------------------------------------------------------------------- Ocean Quest one well plus option high 40's late Dec. 2003 - ------------------------------------------------------------------------------- Ocean Star - - - - ------------------------------------------------------------------------------- Ocean America one well extension plus mid 60's late Nov. 2003 option - ------------------------------------------------------------------------------- Ocean Valiant three wells plus high 50's late Dec. 2003 option - ------------------------------------------------------------------------------- Ocean Victory one well low 40s late Nov. 2003 - --------------------------------------------------------------------------- --- Ocean Confidence five-year term 170's early Jan. 2001 - ------------------------------------------------------------------------------- DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES (3) - ------------------------------------------------------------------------------- Ocean Concord - - - - ------------------------------------------------------------------------------- Ocean Lexington second of two wells high 30's late Nov. 2003 - ------------------------------------------------------------------------------- Ocean Saratoga two wells plus option low 40's late Jan. 2004 - ------------------------------------------------------------------------------- DOMESTIC JACKUPS (11) - ------------------------------------------------------------------------------- Ocean Crusader one well plus option mid 20's late Dec. 2003 - ------------------------------------------------------------------------------- Ocean Drake two wells plus option high 20's late Feb. 2004 - ------------------------------------------------------------------------------- Ocean Columbia one well high 20's late Dec. 2003 - ------------------------------------------------------------------------------- Ocean Spartan one well high 20's late Nov. 2003 - ------------------------------------------------------------------------------- Ocean Spur two wells plus option low 30's late Jan. 2004 - ------------------------------------------------------------------------------- Ocean King one well plus option high 30's mid Jan. 2004 - ------------------------------------------------------------------------------- Ocean Nugget six month extension low 30's mid Jan. 2004 plus option - ------------------------------------------------------------------------------- Ocean Summit second of two wells mid 30's mid Jan. 2004 plus option - ------------------------------------------------------------------------------- Ocean Warwick one well mid 30's late Feb. 2004 - ------------------------------------------------------------------------------- Ocean Titan one well low 50's early March 2004 - ------------------------------------------------------------------------------- Ocean Tower one well plus option mid 40's mid Feb. 2004 - ------------------------------------------------------------------------------- 1 - ------------------------------------------------------------------------------- INTERNATIONAL SEMISUBMERSIBLES (17) - ------------------------------------------------------------------------------- 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 high 60's mid Aug. 2003 - ------------------------------------------------------------------------------- Ocean Yorktown four year term work mid 40's late Oct. 2003 - ------------------------------------------------------------------------------- - ------------------------------------------------------------------------------- AFRICA - ------------------------------------------------------------------------------- Ocean Nomad one well high 40's mid Feb. 2004 - ------------------------------------------------------------------------------- Ocean Patriot - - - - ------------------------------------------------------------------------------- NORTH SEA - ------------------------------------------------------------------------------- Ocean Guardian one year low 50's early April 2003 - ------------------------------------------------------------------------------- Ocean Princess first of two wells mid 40's mid Feb. 2004 plus option - ------------------------------------------------------------------------------- Ocean Vanguard _ _ _ - ------------------------------------------------------------------------------- AUSTRALASIA - ------------------------------------------------------------------------------- Ocean Bounty under tow to mid 50's late Feb. 2004 New Zealand - ------------------------------------------------------------------------------- Ocean Epoch Exeter/Mutineer mid 60's mid Jan. 2004 development plus option - ------------------------------------------------------------------------------- Ocean General one option well mid 50's late Jan. 2004 - ------------------------------------------------------------------------------- Ocean Baroness 400 days plus option 110's late March 2003 - ------------------------------------------------------------------------------- Ocean Rover third of four option wells 110s late Dec. 2003 - ------------------------------------------------------------------------------- 2 BRAZIL - ------------------------------------------------------------------------------- Ocean Yatzy end of primary term mid 70's, early Nov. 1998 Nov. 5, 2003 completing well - ------------------------------------------------------------------------------- Ocean Winner 700 day extension mid 50's early April 2004 - ------------------------------------------------------------------------------- Ocean Alliance four-year contract 110's early Sept. 2000 - ------------------------------------------------------------------------------- INTERNATIONAL DRILLSHIPS (1) - ------------------------------------------------------------------------------- Ocean Clipper 700 day extension low 100's early Jan. 2003 - ------------------------------------------------------------------------------- INTERNATIONAL JACKUPS (2) - ------------------------------------------------------------------------------- Ocean Sovereign one well plus two high 30's mid Nov. 2003 options - ------------------------------------------------------------------------------- Ocean Heritage first of three wells mid 50's mid Feb. 2004 plus options - ------------------------------------------------------------------------------- COLD STACKED (5) - ------------------------------------------------------------------------------- Ocean Liberator - - - - ------------------------------------------------------------------------------- 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 EST. END DATE FUTURE CONTRACT AND OTHER INFORMATION - -------------------------------------------------------------------------------------------- DOMESTIC DEEPWATER SEMISUBMERSIBLES (6) - -------------------------------------------------------------------------------------------- Ocean Quest early March 2004 available; actively marketing - -------------------------------------------------------------------------------------------- Ocean Star - available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean America early March 2004 90 day upgrade/survey likely beginning early March 2004; available, actively marketing. - -------------------------------------------------------------------------------------------- Ocean Valiant late July 2004 available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Victory mid March 2004 one well with Chevron/Texaco in mid 60's beginning mid March and ending late May 2004, available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Confidence early Jan. 2006 available; actively marketing. - -------------------------------------------------------------------------------------------- DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES (3) - -------------------------------------------------------------------------------------------- Ocean Concord - special survey thru late March 2004, available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Lexington early March 2004 one well plus option with Walter in low 40's beginning early March and ending late March 2004, available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Saratoga mid May 2004 available, actively marketing. - -------------------------------------------------------------------------------------------- DOMESTIC JACKUPS (11) - -------------------------------------------------------------------------------------------- Ocean Crusader late March 2004 available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Drake mid March 2004 available, actively marketing. - -------------------------------------------------------------------------------------------- Ocean Columbia early March 2004 available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Spartan mid March 2004 one well plus option with LLOG in low 30's beginning mid March and ending mid April 2004, available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Spur early April 2004 available, actively marketing. - -------------------------------------------------------------------------------------------- Ocean King late March 2004 available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Nugget early June 2004 available, actively marketing. - -------------------------------------------------------------------------------------------- Ocean Summit early March 2004 60 day extension plus option with Chevron/Texaco in mid 30's beginning early March and ending early May 2004, available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Warwick mid April 2004 available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Titan mid March 2004 available, actively marketing. - -------------------------------------------------------------------------------------------- Ocean Tower mid March 2004 available; actively marketing. - -------------------------------------------------------------------------------------------- 1 - ------------------------------------------------------------------------------------------- INTERNATIONAL SEMISUBMERSIBLES (17) - -------------------------------------------------------------------------------------------- MEXICO - -------------------------------------------------------------------------------------------- Ocean Ambassador mid Dec. 2007 available. - -------------------------------------------------------------------------------------------- Ocean Whittington early Oct. 2006 available. - -------------------------------------------------------------------------------------------- Ocean Worker late July 2007 available. - -------------------------------------------------------------------------------------------- Ocean Yorktown mid July 2007 available. - -------------------------------------------------------------------------------------------- - -------------------------------------------------------------------------------------------- AFRICA - -------------------------------------------------------------------------------------------- Ocean Nomad mid March 2004 Mobe to Gabon, then three wells plus option in Gabon with Vaalco/SASOL in high 40s beginning early April and ending early July 2004; available, actively marketing. - -------------------------------------------------------------------------------------------- Ocean Patriot - available; actively marketing. - -------------------------------------------------------------------------------------------- NORTH SEA - -------------------------------------------------------------------------------------------- Ocean Guardian late March 2004 one year extension with Shell in high 40's beginning late March 2004 and ending late March 2005, available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Princess late July 2004 available, actively marketing. - -------------------------------------------------------------------------------------------- Ocean Vanguard _ available; actively marketing. - -------------------------------------------------------------------------------------------- AUSTRALASIA - -------------------------------------------------------------------------------------------- Ocean Bounty mid March 2004 Two wells plus two option wells with NZOP in low 70's beginning mid March 2004 and ending late May 2004; available, actiely marketing. - -------------------------------------------------------------------------------------------- Ocean Epoch mid Nov. 2004 available, actively marketing. - -------------------------------------------------------------------------------------------- Ocean General late March 2004 five completion options in mid 50's with P.V.E&P beginning late March and ending mid Sept. 2004, available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Baroness early May 2004 180 day option exercised in 110's with Unocal beginning early May and ending early Nov. 2004, available; actively marketing. - -------------------------------------------------------------------------------------------- Ocean Rover mid April 2004 actively marketing. - -------------------------------------------------------------------------------------------- 2 BRAZIL - -------------------------------------------------------------------------------------------- Ocean Yatzy early March 2004 Scheduled for survey beginning 1st Qtr. 2004. Estimated downtime 30 days; 700 day extension in mid 70's beginning in early Nov. 2003 and ending mid Oct. 2005; available. - -------------------------------------------------------------------------------------------- Ocean Winner early March 2006 survey under way, estimated early April completion; available. - -------------------------------------------------------------------------------------------- Ocean Alliance early Sept. 2004 survey under way, estimated early April completion; available. - -------------------------------------------------------------------------------------------- INTERNATIONAL DRILLSHIPS (1) - -------------------------------------------------------------------------------------------- Ocean Clipper early March 2006 available. - -------------------------------------------------------------------------------------------- INTERNATIONAL JACKUPS (2) - -------------------------------------------------------------------------------------------- Ocean Sovereign mid March 2004 Two wells plus two options with Amerada Hess in high 30's beginning mid March 2004 and ending mid May 2004; available, actively marketing. - -------------------------------------------------------------------------------------------- Ocean Heritage late June 2004 available, actively marketing. - -------------------------------------------------------------------------------------------- COLD STACKED (5) - -------------------------------------------------------------------------------------------- Ocean Liberator - Cold stacked Nov. '02. - -------------------------------------------------------------------------------------------- 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