GulfMark Offshore Reports Fourth Consecutive Record Quarterly Results




 * Revenues of $65.5 million up 37% from 1st Quarter 2006
 * Earnings of $0.84 per share before gain on vessel sale
 * Demand remains strong in North Sea and Southeast Asia
 * New build program on track to expand fleet

HOUSTON, April 30, 2007 (PRIME NEWSWIRE) -- GulfMark Offshore, Inc. (Nasdaq:GMRK) today announced net income of $24.4 million, or $1.06 per diluted share on revenue of $65.5 million for the quarter ended March 31, 2007, which represents a record first quarter in the company's history. This compares to net income of $6.3 million, or $0.30 per share (diluted) on revenue of $47.7 million for the first quarter of 2006. The improvement is directly related to improved day rates in both the North Sea and Southeast Asia regions. The previously announced sale of the North Prince, a vessel operating in the North Sea region, contributed $0.22 per diluted share or $5.0 million to these results. Excluding the gain on the sale of the vessel, net income would have been $19.4 million, or $0.84 per diluted share, more than double the earnings from the first quarter of 2006.

Operating income for the three months ended March 31, 2007 was $27.4 million, compared to $10.2 million for the same period in 2006. The increase in operating income for the quarter was primarily driven by the 37% increase in revenues from period to period, the gain on sale of the North Prince and improved operating margins. This is offset somewhat by higher operating cost related to planned dry docks in the first quarter.

Bruce Streeter, President and CEO of the Company, commented, "First quarter results are particularly noteworthy compared to our previous record quarters considering it contained fewer available operating days, generally has the largest impact from seasonality and had a higher number of completed drydocks. Our earnings are a reflection of the continued strong demand in all our market areas, particularly the North Sea and Southeast Asia regions. The addition of the two new vessels in Southeast Asia in the latter part of 2006 and the delivery of the Highland Prestige in the North Sea on April 4, 2007 have enhanced our capability to meet the growing demands of our customers. Three additional vessels should arrive in 2007, one in the North Sea in the fourth quarter and two in Southeast Asia during the third and fourth quarter, respectively.

"Our contract cover for the remainder of 2007 and beyond remains strong. We expect demand for vessel services to stay healthy in all of our markets in the near term which will help continue to provide improved cash flow. As we further develop our fleet through the new build program, we continue to enhance our earnings potential for the future."

At March 31, 2007 the Company had working capital of $115.6 million, including $96.0 million in cash. The Company had $159.5 million of 7.75% senior notes outstanding as long term debt.

GulfMark will hold a conference call to discuss the earnings with analysts, investors and other interested parties at 9:00 a.m. EDT on Tuesday, May 1, 2007. Those interested in participating in the conference call should dial 877-381-5943 in the United States and Canada or 706-679-4543 from outside the country 5 minutes in advance of the start time and ask for the GulfMark 1st Quarter Earnings conference. The conference call will also be available via audio web cast and podcast at http://www.investorcalendar.com. A telephonic replay of the conference call will be available for 4 days, starting approximately 2 hours after the completion of the call, and can be accessed by dialing 800-642-1687 (international calls should use 706-645-9291) and entering access code 7420296.

GulfMark Offshore, Inc. provides marine transportation services to the energy industry through a fleet of sixty (61) offshore support vessels, primarily in the North Sea, offshore Southeast Asia, and the Americas.

This press release contains certain forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995, which involve known and unknown risk, uncertainties and other factors. Among the factors that could cause actual results to differ materially are: price of oil and gas and their effect on industry conditions; industry volatility; fluctuations in the size of the offshore marine vessel fleet in areas where the Company operates; changes in competitive factors; delay or cost overruns on construction projects and other material factors that are described from time to time in the Company's filings with the SEC. Consequently, the forward-looking statements contained herein should not be regarded as representations that the projected outcomes can or will be achieved.



 Statement of Operations                    Three Months Ended
 -----------------------             ---------------------------------
                                     March 31, December 31,  March 31,
                                       2007       2006         2006
                                     --------  -----------   ---------
 Revenues                            $ 65,513   $ 68,982    $ 47,675
 Direct operating expenses             24,914     24,147      21,784
 Drydock expense                        4,459      1,206       2,756
 General and administrative expenses    6,633      6,249       5,901
 Depreciation expense                   7,107      7,021       7,061
 Gain on sale of assets                (5,013)    (3,597)        (41)
                                     --------  -----------   ---------
   Operating Income                    27,413     33,956      10,214

 Interest expense                      (2,612)    (3,417)     (4,298)
 Interest income                        1,026        698         165
 Foreign currency gain (loss) and
  other                                  (102)      (166)        470
                                     --------  -----------   ---------
                                                  
 Income before income taxes            25,725     31,071       6,551
 Income tax provision                  (1,372)      (491)       (288)
                                     --------  -----------   ---------
   NET INCOME                        $ 24,353   $ 30,580    $  6,263
                                     ========  ===========   =========
 Earnings per share:
 ------------------
 Basic                               $   1.09   $   1.47    $   0.31
 Diluted                             $   1.06   $   1.42    $   0.30
  Weighted average common shares       22,310     20,840      20,143
  Weighted average diluted common
   shares                              22,954     21,505      20,793




 Operating Statistics                       Three Months Ended
 -----------------------             ---------------------------------
                                     March 31, December 31,  March 31,
                                       2007       2006         2006
                                     --------  -----------   ---------
 Revenues by Region (000's)
 --------------------------
   North Sea based fleet             $ 51,668   $ 55,217    $ 35,822
   Southeast Asia based fleet           8,704      8,567       4,977
   Americas based fleet                 5,141      5,198       6,876

 Rates Per Day Worked
 --------------------
   North Sea based fleet             $ 21,120   $ 20,194    $ 14,665
   Southeast Asia based fleet           8,636      8,525       6,142
   Americas based fleet                10,827     10,898      11,233

 Overall Utilization
 -------------------
   North Sea based fleet                 90.4%      96.7%       92.0%
   Southeast Asia based fleet            95.4%      92.7%       83.7%
   Americas based fleet                  90.0%      88.5%       99.7%

 Average Owned/Chartered Vessels
 -------------------------------
   North Sea based fleet                 29.1       30.1        30.0
   Southeast Asia based fleet            12.0       12.0        11.0
   Americas based fleet                   6.0        6.0         7.0
                                     --------  -----------   ---------
     Total                               47.1       48.1        48.0
                                     ========  ===========   =========
 Drydock Activity(a)
 -------------------
   North Sea based fleet                    6         --           4
   Southeast Asia based fleet               1          1           2
   Americas based fleet                     1          1           1
                                     --------  -----------   ---------
     Total                                  8          2           7
                                     ========  ===========   =========
 Expenditures (000's)                $  4,459   $  1,206     $ 2,756
                                     ========  ===========   =========




                                At April 30, 2007    At May 4, 2006
                               --------------------------------------
                                2007(c)   2008(d)   2006(c)   2007(d)
                               --------------------------------------
 Forward Contract Cover(b)
 -------------------------
 North Sea based fleet          74.1%      58.2%     86.2%     42.7%
 Southeast Asia based fleet     45.8%       8.6%     44.8%      9.0%
 Americas based fleet          100.0%      87.8%     90.4%     73.5%
     Total                      69.7%      48.5%     76.7%     38.9%

 (a) Represents number of completed drydocks in period.
 (b) Forward contract cover represents number of days vessels are
     under contract or option by customers divided by total calendar
     days vessels are available for charter hire.
 (c) Represents nine months (4/1-12/31).
 (d) Represents full year (1/1-12/31).



                                       As of              As of
 Balance Sheet Data  ($000)       March 31, 2007    December 31, 2006
 --------------------------       --------------    -----------------
 Cash and cash equivalents           $ 95,984           $ 82,759
 Working capital                      115,604            104,948
 Vessel and equipment, net            522,747            524,676
 Construction in progress              63,536             47,313
 Total assets                         783,287            750,829
 Long term debt                       159,507            159,490
 Shareholders' equity                 567,621            541,428

                                   Three Months        Twelve Months
                                       Ended              Ended
 Cash Flow Data  ($000)           March 31, 2007    December 31, 2006
 ----------------------           --------------    -----------------
 Cash flow from operating
  activities                         $ 24,866          $ 104,869
 Cash flow used in investing
  activities                          (11,948)           (28,300)
 Cash flow (used in) provided by
  financing activities                    209            (20,679)


            

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