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.
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DIAMOND OFFSHORE DRILLING, INC. RIG STATUS REPORT AS OF MARCH 28, 2005

RIG NAME WD DESIGN LOCATION STATUS* OPERATOR
- -------- ----- ------------- --------- ---------- ----------------

DOMESTIC DEEPWATER SEMISUBMERSIBLES(6)

Ocean Quest 3,500' Victory Class GOM Contracted Noble

Ocean Star 5,500' Victory Class GOM Contracted Kerr-McGee

Ocean America 5,500' Ocean Odyssey GOM Contracted Pioneer

Ocean Valiant 5,500' Ocean Odyssey GOM Contracted Kerr-McGee

Ocean Victory 5,500' Victory Class GOM Contracted Shell

Ocean Confidence 7,500' DP Aker H- GOM Contracted BP
3.2 Modified

DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES(4)

Ocean Voyager 2,000' Victory Class GOM Contracted Walter Oil & Gas

Ocean Concord 2,200' F&G SS-2000 GOM Contracted ENI

Ocean Lexington 2,200' F&G SS-2000 GOM Contracted Walter Oil & Gas

Ocean Saratoga 2,200' F&G SS-2000 GOM Contracted LLOG

<Caption>
EST.
DAYRATE START END
RIG NAME CURRENT TERM (000S) DATE DATE FUTURE CONTRACT AND OTHER INFORMATION
- -------- ----------------- --------- --------- --------- -------------------------------------

DOMESTIC DEEPWATER SEMISUBMERSIBLES(6)

Ocean Quest one well low 100's early late May One well with Noble in high 110's beginning late May and
Feb. 2005 2005 ending mid June; followed by 120 day term plus option with
Noble in mid 120's beginning mid June and ending mid Oct.
2005. Available; actively marketing.

Ocean Star 220 day extension mid 70's early mid July 90 day term extension plus option with Kerr-McGee in low
Dec. 2004 2005 140's beginning mid July 2005 and ending early Oct. 2005.
Available; actively marketing.

Ocean America one assignment low 130's late Mar. late First of two well extension with Mariner in mid 110's
well 2005 April beginning late April and ending late May; followed by second
2005 well with Mariner in low 130's beginning late May and ending
early July; followed by three well extension with
Mariner/Pioneer in low 150's beginning early July and ending
early Oct. 2005. Available; actively marketing.

Ocean Valiant one well mid 80's late Jan. mid April One well with Kerr-McGee in high 90's beginning mid April
2005 2005 and ending late June, followed by one well plus options with
Kerr-McGee in low 130's beginning late June and ending late
Aug. 2005; followed by 180 day term extension with
Kerr-McGee in low 150's beginning late Aug. 2005 and ending
mid Feb. 2006. Available; actively marketing.

Ocean Victory 100 day term plus low 130's mid Feb. late May Available; actively marketing.
option 2005 2005

Ocean Confidence five-year term mid 170's early early Available; actively marketing.
Jan. 2001 Jan. 2006

DOMESTIC 2ND/3RD GENERATION SEMISUBMERSIBLES(4)

Ocean Voyager one well low 70's mid Feb. early One well with Walter in mid 110's beginning early April and
2005 April ending mid April; followed by one well with Walter in low
2005 80's beginning mid April 2005 and ending early May; followed
by LOI for two wells in mid 90's beginning early May and
ending late June; followed by LOI for one well in low 110's
beginning mid Aug. and ending early Oct.; followed by LOI
for one well in low 110's beginning early Oct. and ending
late Nov.; followed by three wells plus option in mid 120's
beginning late Nov. 2005 and ending early April 2006.
Available; actively marketing.

Ocean Concord one well mid 50's early early One well for Kerr-McGee in upper 50's beginning early April
Feb. 2005 April and ending early May 2005; followed by one well with
2005 Kerr-McGee in mid 70's beginning early May and ending early
July 2005; followed by two well extension plus option with
Kerr-McGee in mid 90's beginning early July and ending mid
Sept. 2005. Available; actively marketing.

Ocean Lexington three wells low 50's late Jan. late Rig will go in for approximately 90-day Survey and
2005 April maintenance between second and third well, beginning late
2005 April and ending late July. Following survey, one additional
well with Walter in low 60's beginning late July and ending
mid Aug.; followed by one well plus option with Walter in
low 80's beginning mid Sept. and ending late Oct. 2005.
Available; actively marketing.

Ocean Saratoga three wells mid 60's mid Dec. early Two wells plus option with LLOG in low 110's beginning early
2004 July 2005 July and ending early Dec.; followed by six month extension
with LLOG in low 120's beginning early Dec. 2005 and ending
early June 2006. Available; actively marketing.
</Table>

DIAMOND OFFSHORE DRILLING, INC. RIG STATUS REPORT AS OF MARCH 28, 2005

RIG NAME WD DESIGN LOCATION STATUS* OPERATOR
- -------- ----- ------------- --------- ---------- ----------------

DOMESTIC JACKUPS (12)

Ocean Crusader 200' Mat GOM Contracted Walter Oil & Gas
Cantilever

Ocean Drake 200' Mat GOM Contracted ADTI/Kerr-McGee
Cantilever

Ocean Champion 250' Mat Slot GOM Contracted Hunt

Ocean Columbia 250' Independent GOM Contracted Kerr-McGee
Leg
Cantilever

Ocean Spartan 300' Independent GOM Contracted LLOG
Leg
Cantilever

Ocean Spur 300' Independent GOM Contracted Spinnaker
Leg
Cantilever

Ocean King 300' Independent GOM Contracted El Paso
Leg
Cantilever

Ocean Nugget 300' Independent GOM Contracted ADTI/Mission
Leg
Cantilever

Ocean Summit 300' Independent GOM Contracted LLOG
Leg
Cantilever

Ocean Warwick 300' Independent GOM Contracted Newfield
Leg
Cantilever

Ocean Titan 350' Independent GOM Contracted BHP
Leg
Cantilever

Ocean Tower 350' Independent GOM Contracted Chevron/Texaco
Leg
Cantilever

DOMESTIC JACKUPS (12)

Ocean Crusader two well mid 30's late Jan. early May Available; actively marketing.
extension 2005 2005

Ocean Drake two wells high 30's late Jan. mid April One well extension with ADTI/Kerr-McGee in mid 40's
2005 2005 beginning mid April and ending late April; followed by two
wells plus option with ADTI/CMI/Palace in low 40's beginning
late April and ending early May 2005. Available; actively
marketing.

Ocean Champion two wells low 40's late Jan. mid June Available; actively marketing.
2005 2005

Ocean Columbia Five wells mid 40's early mid June Available; actively marketing.
Jan. 2005 2005

Ocean Spartan three wells plus high 40's late Feb. late June Available; actively marketing.
option 2005 2005

Ocean Spur one well mid 40's mid Dec. late One well with Forest in mid 40's beginning late April and
2004 April ending early June 2005. Maintenance/repairs early June
2005 through late July 2005. Available; actively marketing.

Ocean King one well plus mid 50's early mid April Available; actively marketing.
option Mar. 2005 2005

Ocean Nugget one well high 40's mid Feb. early One well with Mariner in low 50's beginning early April and
2005 April ending late April; followed by two wells plus option with
2005 Houston Exploration in low 50's beginning late April and
ending early Aug. 2005. Available; actively marketing.

Ocean Summit two wells plus mid 40's late Feb. late May Available; actively marketing.
option 2005 2005

Ocean Warwick one well low 50's mid Mar. late 90 day term with Chevron/Texaco in high 40's (adjustable
2005 April rate) beginning late April and ending late July 2005.
2005 Available; actively marketing.

Ocean Titan one well plus mid 50's late Jan. mid May Available; actively marketing.
option 2005 2005

Ocean Tower one well plus mid 50's early mid June One well extension plus option with Chevron/Texaco in high
option Jan. 2005 2005 60's beginning mid June and ending late Aug. 2005.
Available; actively marketing.
</Table>

DIAMOND OFFSHORE DRILLING, INC. RIG STATUS REPORT AS OF MARCH 28, 2005

RIG NAME WD DESIGN LOCATION STATUS* OPERATOR
- -------- ----- ------------- --------- ---------- ----------------

INTERNATIONAL SEMISUBMERSIBLES (17)

MEXICO

Ocean Ambassador 1,100' Bethlehem SS- GOM Contracted PEMEX
2000

Ocean 1,500' Aker H-3 GOM Contracted PEMEX
Whittington

Ocean Worker 3,500' F&G 9500 GOM Contracted PEMEX
Enhanced
Pacesetter

Ocean Yorktown 2,850' F&G SS-2000 GOM Contracted PEMEX

NORTH SEA

Ocean Nomad 1,200' Aker H-3 North Sea Contracted Talisman

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 Shipyard DODI

AUSTRALASIA

Ocean Bounty 1,500' Victory Class Australia Contracted Hardman Res.

Ocean Patriot 1,500' Bingo 3000 Australia Contracted Woodside

Ocean Epoch 1,640' Korkut Shipyard DODI --

Ocean General 1,640' Korkut Viet Nam Contracted KNOC

Ocean Baroness 7,000' Victory Class Indonesia Contracted Unocal

Ocean Rover 7,000' Victory Class Malaysia Contracted Murphy

INTERNATIONAL SEMISUBMERSIBLES (17)

MEXICO

Ocean Ambassador four year term mid 50's late July mid Dec. Available.
work 2003 2007

Ocean four year term low 60's late July early Available.
Whittington work 2003 Oct. 2006

Ocean Worker four year term high 60's mid Aug. late July Available.
work 2003 2007

Ocean Yorktown four year term mid 40's late Oct. mid July Available.
work 2003 2007

NORTH SEA

Ocean Nomad one year low 80's early early Available; actively marketing.
Jan. 2005 Jan. 2006

Ocean Guardian one year high 40's late Mar. late Mar. One year program with Shell in U.K. North Sea in low 80's
2004 2005 beginning late Mar. 2005 and ending late Mar. 2006.
Available; actively marketing.

Ocean Princess one year low 80's early late Dec. Available; actively marketing.
extension Jan. 2005 2005

Ocean Vanguard -- -- -- -- In yard for additional storm damage repairs. Est. completion
mid April 2005. One year plus option program in Norway with
Statoil in low 140's beginning in mid April 2005 and ending
in mid April 2006. Available; actively marketing.

AUSTRALASIA

Ocean Bounty one well plus low 80's mid Mar. mid April LOI for one well plus option in mid 80's beginning mid April
option 2005 2005 and ending late May; followed by one well plus option with
ConocoPhillips in mid 80's beginning late May and ending mid
July; followed by one well with Coogee Res. in mid 80's
beginning mid July and ending mid Aug.; followed by two
wells plus option in low 90's beginning mid Aug. and ending
mid Oct.; followed by LOI for one well plus option in mid
90's beginning mid Oct. and ending late Nov.; followed by
LOI for four wells plus option in high 90's beginning late
Nov. 2005 and ending late May 2006. Available; actively
marketing.

Ocean Patriot two wells high 70's mid Mar. late Two wells plus option with Santos in high 70's beginning
2005 April late April and ending late June; followed by LOI for one
2005 well plus three options in high 70's beginning late June and
ending mid Aug.; followed by one well with Santos in high
70's beginning mid Aug. and ending early Sept. 2005.
Available; actively marketing.

Ocean Epoch -- -- -- -- Singapore shipyard preping for Murphy contract until early
April. Four wells plus option with Murphy in low 70's in
Malaysia beginning early April 2005 and ending late Dec.
2005. Available; actively marketing.

Ocean General one well plus mid 50's late Mar. mid Aug. LOI for two wells plus option in mid 70's in Malaysia
option 2005 2005 beginning mid Aug. 2005 and ending early Mar. 2006; followed
by LOI for two wells plus option in high 70's in Viet Nam
beginning early Mar. 2006 and ending late May 2006.
Available; actively marketing.

Ocean Baroness 180 day extension mid 130's late Dec. early May Lump sum mobe to GOM beginning early May and ending early
2004 2005 Oct., including prep; followed by LOI with Amerada Hess for
one-year term plus mobe in low 200's in GOM beginning early
Oct. 2005 and ending early Oct. 2006. Available; actively
marketing.

Ocean Rover six option wells low 120's late Jan. mid July LOI with Murphy for 950 day extension at average dayrate in
2005 2005 mid 170's beginning mid July 2005 and ending mid Feb. 2008.
Available; actively marketing.
</Table>

DIAMOND OFFSHORE DRILLING, INC. RIG STATUS REPORT AS OF MARCH 28, 2005

RIG NAME WD DESIGN LOCATION STATUS* OPERATOR
- -------- ----- ------------- --------- ---------- ----------------

BRAZIL

Ocean Yatzy 3,300' DP DYVI Super Brazil Contracted Petrobras
Yatzy

Ocean Winner 3,500' Aker H-3 Brazil Contracted Petrobras

Ocean Alliance 5,000' Alliance Brazil Contracted Petrobras
Class

INTERNATIONAL DRILLSHIPS(1)

Ocean Clipper 7,500' DP Brazil Contracted Petrobras
Fluor/Mitsubishi

INTERNATIONAL JACKUPS(2)

Ocean Sovereign 250' Independent Bangladesh Contracted Cairn Energy
Leg
Cantilever

Ocean Heritage 300' Independent India Contracted Cairn Energy
Leg
Cantilever

UPGRADE(1)

Ocean Endeavor 2,000' Victory Class GOM Under tow DODI

COLD STACKED(1)

Ocean New Era 1,500' Korkut GOM Cold DODI
Stacked

ASSET HELD FOR SALE(1)

Ocean Liberator 600' Aker H-3 S. Africa Cold DODI
Stacked

BRAZIL

Ocean Yatzy 700 day extension mid 70's early mid Oct. Available.
Nov. 2003 2005

Ocean Winner 700 day extension mid 50's early mid Mar. Available.
April 2006
2004

Ocean Alliance one year high 90's early early Available.
extension Sept. Sept.
2004 2005

INTERNATIONAL DRILLSHIPS(1)

Ocean Clipper 700 day extension low 100's early early Available; actively marketing.
Jan. 2003 Mar. 2006

INTERNATIONAL JACKUPS(2)

Ocean Sovereign three wells plus low 60's mid Nov. mid April Available; actively marketing.
option 2004 2005

Ocean Heritage six wells plus low 60's early late Mar. Lump sum demobe to Qatar late Mar. until mid April; followed
options Nov. 2004 2005 by LOI for two wells plus option in mid 70's beginning mid
April 2005 and ending early Feb. 2006. Available; actively
marketing.

UPGRADE(1)

Ocean Endeavor -- -- -- -- Mobing to Singapore shipyard for upgrade to 10,000 ft.
capable 5th Generation rig. Estimated completion early 2007.
Available; actively marketing.

COLD STACKED(1)

Ocean New Era -- -- -- -- Cold stacked Dec. '02.

ASSET HELD FOR SALE(1)

Ocean Liberator -- -- -- -- Cold stacked Nov. '02.
</Table>

NOTES:

* GENERALLY, RIG UTILIZATION RATES APPROACH 95-98% DURING CONTRACTED PERIODS;
HOWEVER, UTILIZATION RATES CAN BE ADVERSELY IMPACTED BY ADDITIONAL DOWNTIME DUE
TO UNSCHEDULED REPAIRS AND MAINTENANCE, WEATHER CONDITIONS AND OTHER FACTORS.

GOM = Gulf of Mexico