All Coast is unique in that its foundation rests on a management team that is highly skilled in every segment of the industry.

John T. Nesser III, CO-CEO and Manager

  • Over 40 years of experience in the oil and gas, engineering & construction and maritime industries
  • Previously served as the Executive Vice President and Chief Operating Officer of McDermott International, Inc., a leading international engineering and marine construction company; Retired July, 2011
  • Served McDermott in various executive management roles for over ten years
  • Member, Board of Directors, Thermon Group Holdings, Inc.
  • Previously Member, Board of Directors, Layne Christensen Company
  • Member, Louisiana State University Law Center Board of Trustees and Chancellors Counsel
  • Vice Chairman, Louisiana State University Laborde Energy Law Center Advisory Counsel
  • Previously Member, Board of Directors, Seahawk Drilling, Inc.
  • Previously Practicing Attorney and Co-Founder, Nesser, King and LeBlanc

John Powers, CO-CEO and Manager

  • Over 40 years of experience in the oil and gas, engineering and energy industries, having served in a variety of leadership roles, including Partner and President, at various energy companies since 1973
  • Power Offshore Services, LLC; Reeled Tubing, LLC; Seatrax, LLC; Coastal Drilling Co. Power Offshore Services was the leading Gulf of Mexico lift boat operator prior to its sale to Superior Energy Services in 2001  

  • Currently serves as principal partner and President of Semco, LLC, a leader in the design and construction of marine vessels, providing services to the offshore oil, natural gas and renewable energy industries  

  • Semco has designed and constructed over 50% of the world’s largest (> 250’) lift boats and over 20% of the world’s total operating liftboats  

  • Founded and successfully divested numerous energy and marine services companies during his career

Byron P. Allemand, COO and Vice President

  • Byron was previously the Managing Director of Hercules Offshore Gulf of Mexico Liftboat Operations.
  • Prior to, he held Vessel Operations and Construction positions at Bollinger Shipyards for 8 years.

  • Has lead All Coast to numerous awards including Ship Operator of the Year and Lloyd’s List North America Safety Award.

  • Holds a CPA, CPM and PMP certifications and a MBA from Nicholls State University

151 Southpark Road, 3rd Floor
Lafayette, LA 70508    337.560.8000

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