Seaward Marine Services Inc.

Kapolei, HI Hawaii Office Part of MHI Holdings, LLC

Company facts

Self-certified in SAM.gov: For Profit Organization

Limited Liability Company
Entity structure: Corporate Entity (Not Tax Exempt)
NAICS codes registered in SAM.gov: 488390 Other Support Activities for Water Transportation Primary

237990 Other Heavy and Civil Engineering Construction

336611 Ship Building and Repairing

561990 All Other Support Services

811310 Commercial and Industrial Machinery and Equipment (except Automotive and Electronic) Repair and Maintenance
Corporate family: MHI Holdings, LLC Parent JJE2BFJL7GM8

Seaward Marine Services Inc. CBS1SBAMR4X1
SAM.gov registration date: Mar 22, 2002
Physical address: 91-87 Hanua St, Kapolei, HI 96707, USA
Website: seaward-marine.com
Founded: 1972
Employees: 51-250
Estimated annual revenue: $10B+
Industry: Industrials

Capital Goods

Construction & Engineering
SIC code: 73 Business Services
Profiles: LinkedIn

Facebook

Crunchbase

Registration and certifications come from SAM.gov and the SBA; company details from public web sources. Updated Aug 3, 2026.

Seaward Marine Services Inc.'s 2 most recent federal contract and grant awards, newest first. Amounts are dollars obligated.
Award	Agency	Obligated	Awarded
Hull cleaning Contract · 70Z08025PPBPL0052	Coast Guard	$30,609	Apr 7, 2025
200212 ! 002541 ! 1700 ! SA10A !fleet & industrial supply center ! N0060402PC061 !a ! N! !n! !20020909 ! 20020930 !… Contract · N0060402PC061	Naval Supply Systems Command	$31,658	Sep 9, 2002

Seaward Marine Services Inc.'s Unique Entity ID (UEI) in SAM.gov is CBS1SBAMR4X1.

Seaward Marine Services Inc.'s CAGE code is 1NZX1.

Seaward Marine Services Inc.'s primary NAICS code is 488390 (Other Support Activities for Water Transportation).

Seaward Marine Services Inc.'s physical address in SAM.gov is 91-87 Hanua St, Kapolei, HI 96707, USA.

Yes. Seaward Marine Services Inc.'s SAM.gov registration is active through July 30, 2027.

Seaward Marine Services Inc. is part of MHI Holdings, LLC.

Seaward Marine Services Inc.'s most recent federal contract award is Hull cleaning (70Z08025PPBPL0052), from Coast Guard, on April 7, 2025.

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