SEACOR Announces Increase in Securities Repurchase Authority

FORT LAUDERDALE, FL, Jun 06 (MARKET WIRE) --
SEACOR Holdings Inc. (NYSE: CKH) today announced that its Board of Directors
has increased its authorization for repurchases of SEACOR's common stock and
its 2.875% convertible senior debentures due 2024 by $75.5 million for a total
authorized expenditure of up to $150 million for the purchase of such
securities. In addition, SEACOR may purchase, separate from such authorization,
any or all of its 7.2% senior notes due 2009, its 5 7/8% senior notes due
2012, and the 9 1/2% senior notes due 2013 of Seabulk International, Inc.,
a wholly-owned subsidiary. The repurchase of securities may be conducted from
time to
timethrough open market purchases, privately negotiated transactions or
otherwise depending on market conditions.

SEACOR is a global provider of marine support and transportation service,
primarily to the energy and chemical industries. SEACOR and its subsidiaries
provide customers with a full suite of marine-related services including
offshore
services, U.S. coastwise shipping, inland river services, aviation services,
environmental services, and offshore and harbor towing services. SEACOR is
focused on providing highly responsive local service, combined with the highest
safety standards, innovative technology, modern efficient equipment, and
dedicated,
professional employees.

This release includes "forward-looking statements" within the meaning of the
Private Securities Litigation Reform Act of 1995. Such forward-looking
statements
concerning management's expectations, strategic objectives, business prospects,
anticipated economic performance and financial condition and other similar
matters
involve known and unknown risks, uncertainties and other important factors that
could cause the actual results, performance or achievements of results to differ
materially from any future results, performance or achievements discussed or
implied by such forward-looking statements. Such risks, uncertainties and
otherimportant factors include, among others: the conditions in the global
financial
markets and international economic conditions including, interest rate
fluctuations, availability of credit, inflation rates, change in laws, trade
barriers, commodity prices and currency exchange fluctuations, the cyclical
nature of the oil and gas industry, loss of U.S. coastwise endorsement for the
Seabulk Trader, a retrofitted double-hull tanker, if the company is
unsuccessful in appealing a district court opinion instructing the U.S. Coast
Guard to revoke its coastwise charter, activity in foreign countries and changes
in foreign political, military and economic conditions, changes in foreign
and domestic oil and gas exploration and production activity, safety record
requirements related to Offshore Marine Services, Marine Transportation
Services and Aviation Services, decreased demand for Marine Transportation
Services and Harbor and Offshore Towing Services due to construction of
additional refined petroleum product, natural gas or crude oil pipelines or due
to decreased demand for refined petroleum products, crude oil or chemical
products
or a change in existing methods of delivery, compliance with U.S. and
foreigngovernment laws and regulations, including environmental laws and
regulations, the dependence of Offshore Marine Services, Marine Transportation
Services and Aviation Services on several customers, consolidation of the
Company's
customer base, the ongoing need to replace aging vessels and aircraft, industry
fleet capacity, restrictions imposed by the Shipping Acts and Aviation Acts on
the amount of foreign ownership of the Company's Common Stock, increased
competition if the Jones Act is repealed, operational risks of Offshore
Marine Services, Marine Transportation Services, Harbor and Offshore Towing
Services and Aviation Services, effects of adverse weather conditions and
seasonality on Aviation Services, future phase-out of Marine Transportation
Services' double-bottom tanker, dependence of spill response revenue on the
number and
size of spills and upon continuing government regulation in this area and
Environmental Services' ability to comply with such regulation and other
governmental regulation, changes in National Response Corporations' Oil Spill
Removal Organization classification, liability in connection with providing
spill response services, effects of adverse weather and river conditions and
seasonality on Inland River Services, the level of grain export volume, the
effect of fuel prices on barge towing costs, variability in freight rates for
inland
river barges, the effect of international economic and political factors in
Inland
River Services' operations, adequacy of insurance coverage, the attraction and
retention of qualified personnel by the Company and various other matters and
factors, many of which are beyond the Company's control. In addition, these
statementsconstitute the Company's cautionary statements under the Private
SecuritiesLitigation Reform Act of 1995. It is not possible to predict or
identify all such
factors. Consequently, the following should not be considered a complete
discussion of all potential risks or uncertainties. The words "estimate,"
"project," "intend," "believe," "plan" and similar expressions are intended to
identify forward-looking statements. Forward-looking statements speak only as of
the date
of the document in which they are made. The Company disclaims any obligation
or undertaking to provide any updates or revisions to any forward-looking
statement to reflect any change in the Company's expectations or any change in
events, conditions or circumstances on which the forward-looking statement
is based. The forward-looking statements in this release should be evaluated
togetherwith the many uncertainties that affect the Company's businesses,
particularly those
mentioned under "Forward-Looking Statements" in Item 7 on the Company's
Form 10-K and SEACOR's periodic reporting on Form 10-Q and Form 8-K (if any),
which is incorporated by reference.

For additional information, contact:
Molly Hottinger
(954) 627-5278
www.seacorholdings.com

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