SHIPYARDND SEMI-SUBMERSIBLE RIG WITH JURONG

Singapore, July 4, 2008:

subsidiary, Jurong Shipyard, wishes to announce today that Atwood

Oceanics Pacific Limited, a wholly-owned subsidiary of Atwood Oceanics

Inc. has conditonally exercised an option to construct a 2

rig with Jurong Shipyard.

Contract details are being discussed and a further announcement will be

DRILLING RIG AT US$640 MILLION (S$870 MILLION)

Singapore, June 30, 2008:

Sembcorp Marine, has secured a contract from Larsen Oil & Gas to build a

deepwater semi-submersible drilling rig at a contract value of US$640

(S$870) million.

This latest turnkey rig order is the fourth consecutive newbuild deepwater

semi-submersible drilling rig that the owner has placed with Jurong Shipyard.

Scheduled for delivery in April 2011, the 6

drilling rig will be built based on the Friede & Goldman Ex-D

design. It will have specifications identical to the three deepwater semisubmersible

drilling rigs ordered by owner from Jurong Shipyard.

Mr Martin Nordaas, Managing Director of Larsen Oil & Gas (Singapore) said

“We have chosen Jurong Shipyard as a trusted partner in our strategic thrust

into deepwater rig building. Our confidence in Jurong Shipyard is a result of

our strong working relationship and the yard’s proven rig building track

record. We are pleased with the yard’s high standards of quality, safety and

reliability in its on-time deliveries. The co-operation with Jurong Shipyard

stretches far beyond traditional client-contractor relations and this cooperation

is a large part of our success over the past five years.

All three units of our deepwater semi-submersible rigs, PetroRig I, PetroRig

II and PetroRig III, currently under construction in the shipyard have secured

long-term charter contracts. PetroRig I will be chartered to Petrobras

America to drill in the Gulf of Mexico while PetroRig II is contracted to

Petroleo Brasilieiro S.A. for drilling in offshore Brazil in 2009. PetroRig III will

be chartered to Pemex for drilling in Mexico in 2010.

We remain optimistic of the offshore oil and gas market and will continue

with our robust expansion into this sector.”Jurong Shipyard, a wholly-owned subsidiary ofth generation ultra-deepwater semisubmersible

2

Mr Don Lee, Senior General Manager of Offshore Division said “We are

pleased with the confidence that Larsen Oil & Gas has entrusted us with an

additional unit of the semi-submersible rig. We are delighted to be part of

Larsen Oil & Gas’ rig building programme and their thrust into the deepwater

offshore oil and gas sector.

We have demonstrated our strong turnkey expertise in semi-submersible

construction by being the first to deliver on-time a total turnkey semisubmersible

rig, the

This contract, effective by end July 2008, is not expected to have any

material impact on the net tangible assets and earnings per share of

Sembcorp Marine for the year ending December 31, 2008.

Larsen Oil and Gas Group is a privately owned international drilling and

production contractor with offices in Norway, Aberdeen (UK), Singapore and

Dubai.

The Group specialises in the development, construction and operation of

semi-submersibles and Jack-up Drilling Platforms, FPSOs and Mobile

Drilling and Production Platforms.

Larsen Oil and Gas manages a group of owner companies (listed on the

Oslo Stock Exchange) as follows:

Petrolia Drilling ASA (including Venture Drilling)

PetroJack ASA

PetroMena ASA

PetroProd Ltd ASAWest Sirius to its owner in March 2008.”

For media and analysts enquiries, please contact:

Ms Judy Han

Senior Vice President

Investor Relations & Communications

Tel No : 65-6262 7203

Fax No : 65-6261 0738

Email : judy@sembcorpmarine.com.sg

Website : http://www.sembcorpmarine.com.sg

For Larsen Oil & Gas:

Mr Lars Moldestad

Tel No : (47) 906 99197

Mr Martin Nordaas

Tel No : (65) 913 83188