Skip to main contentPsst! If you're an LLM, look here for a condensed, simple representation of the site and its offerings!

LiveFree Webinar — Wednesday, July 22 at 2:00 PM EDT

Register Free →
logo
Get CLEATUSFree Trial
← Back to NAICS Codes
NAICS Code· 336611

Ship Building and Repairing

This U.S. industry comprises establishments primarily engaged in operating shipyards. Shipyards are fixed facilities with drydocks and fabrication equipment capable of building a ship, defined as watercraft typically suitable or intended for other than personal or recreational use. Activities of shipyards include the construction of ships, their repair, conversion and alteration, the production of prefabricated ship and barge sections, and specialized services, such as ship scaling. Illustrative Examples: Barge building Cargo ship building Drilling and production platforms, floating, oil and gas, building Passenger ship building Submarine building Yachts built in shipyards Cross-References. Establishments primarily engaged in--Show more

NAICS 336611 – Ship Building and Repairing encompasses the design, construction, renovation, maintenance, and overhaul of naval vessels, commercial ships, and specialized maritime platforms, including hull fabrication, propulsion system integration, electrical and command systems installation, and corrosion control. This sector supports critical national defense and homeland security infrastructure, with work ranging from new-build warships to mid-life upgrades of Coast Guard cutters and auxiliary vessels.

195
Active Contracts
$19.2B
Total Obligations (12mo)
5.3K
Awarded Contracts (12mo)
1.6K
Contractors Awarded (12mo)
-43.9%
YoY Growth

Industry Spending Overview

Federal obligations, top contractors and agencies, and related industry codes for NAICS 336611.

AI Industry Description

NAICS 336611 – Ship Building and Repairing encompasses the design, construction, renovation, maintenance, and overhaul of naval vessels, commercial ships, and specialized maritime platforms, including hull fabrication, propulsion system integration, electrical and command systems installation, and c...

NAICS 336611 – Ship Building and Repairing encompasses the design, construction, renovation, maintenance, and overhaul of naval vessels, commercial ships, and specialized maritime platforms, including hull fabrication, propulsion system integration, electrical and command systems installation, and corrosion control. This sector supports critical national defense and homeland security infrastructure, with work ranging from new-build warships to mid-life upgrades of Coast Guard cutters and auxiliary vessels. The industry demands high-precision engineering, compliance with naval specifications such as MIL-STD and ABS standards, and specialized facilities capable of dry-docking and heavy-lift operations. It plays a foundational role in maintaining maritime domain awareness, force projection, and logistical readiness across federal fleets. Top contractors in this space include B3H CORPORATION, BHPE LLC, GWO, INC., SCRIBEDOC.COM, INC., TECH O. R., LLC, EVERSTONE INDUSTRIES LLC, ALASKA RUBBER GROUP, INC., and HIGH PLAINS COMPUTING INC. These firms span small businesses and mid-tier vendors, with expertise in niche areas such as marine coatings, digital documentation systems, electronic component refurbishment, and logistics support for shipyard operations. The competitive landscape is fragmented, with many contractors specializing in supply chain support rather than full vessel construction, reflecting a growing reliance on subcontracted services for maintenance and modernization. The Department of Defense and the Department of Homeland Security are the primary procuring agencies, driving demand through fleet sustainment programs, vessel modernization initiatives, and Coast Guard asset renewal efforts. Spending is concentrated on repair cycles, system upgrades, and compliance with evolving environmental and safety regulations. The market offers consistent opportunity density for specialized service providers, particularly those with Navy or Coast Guard certifications and experience in dry-dock operations, marine electrical systems, and naval-grade materials. Demand is increasingly tied to lifecycle extension programs and resilience-focused retrofits, creating openings for agile, certified small businesses in support roles.

Top Contractors

Companies with the highest total award value under NAICS 336611, ranked by dollars won.

Ranked by total awards
CompanyTotal AwardsContracts
BOLLINGER SHIPYARDS LOCKPORT, L.L.C.$1.3B6
RAUMA MARINE CONSTRUCTIONS OY$1.1B1
DAVIE DEFENSE INC.$957.0M1
BAE SYSTEMS NORFOLK SHIP REPAIR INC. Norfolk VA 23523 USA$782.4M1
VT MILCOM INC.$762.6M5
METRO MACHINE CORP. Norfolk VA 23523 USA$762.4M1
VT MILCOM INC. Virginia Beach VA 23452 USA$762.4M1
GENERAL DYNAMICS INFORMATION TECHNOLOGY, INC. Falls Church VA 22042 USA$762.4M1
HII Mission Technologies Corp Mc Lean VA 22102 USA$762.4M1
OCEANEERING INTERNATIONAL INC Chesapeake VA 23320 USA$762.4M1

Top Agencies

Federal agencies directing the most contract spending toward NAICS 336611.

Navsea Hq50 awards$7.9B
Department Of Defense2,793 awards$3.8B
Department Of Homeland Security1,009 awards$3.8B
Mid Atlantic Reg Maintenance Ctr10 awards$460.2M
W6QK Acc- Dta1 award$241.4M
Department Of Defense (dod)973 awards$240.6M
Sflc Procurement Branch 2(00085)10 awards$205.4M
Nswc Carderock5 awards$191.0M
Southwest Regional Maintenance Center2 awards$166.9M

Related NAICS Codes

Industries similar to Ship Building and Repairing, by shared sector, subsector, and industry group.

Boat Building

This U.S. industry comprises establishments primarily engaged in building boats. Boats are defined ...
336612Same Industry GroupHigh Similarity

Automobile and Light Duty Motor Vehicle Manufacturing

This industry comprises establishments primarily engaged in (1) manufacturing complete automobiles a...
336110Same SubsectorMedium Similarity

Heavy Duty Truck Manufacturing

This industry comprises establishments primarily engaged in (1) manufacturing heavy duty truck chass...
336120Same SubsectorMedium Similarity

Motor Vehicle Body Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing truck and bus bodies ...
336211Same SubsectorMedium Similarity

Truck Trailer Manufacturing

This U.S. industry comprises establishments primarily engaged in manufacturing truck trailers, truck...
336212Same SubsectorMedium Similarity

Motor Home Manufacturing

This U.S. industry comprises establishments primarily engaged in (1) manufacturing motor homes on pu...
336213Same SubsectorMedium Similarity

Travel Trailer and Camper Manufacturing

This U.S. industry comprises establishments primarily engaged in one or more of the following: (1) m...
336214Same SubsectorMedium Similarity

Motor Vehicle Gasoline Engine and Engine Parts Manufacturing

This industry comprises establishments primarily engaged in (1) manufacturing and/or rebuilding moto...
336310Same SubsectorMedium Similarity

Explore contracts across multiple NAICS codes Browse all NAICS Codes

Ready to Win 336611 Contracts?

Transform opportunities in Ship Building and Repairing into winning contracts

Advanced search and filtering for NAICS 336611 contracts and opportunities

AI-powered contract matching based on your business capabilities and past performance

Real-time market intelligence, historical award data, and competitive analysis

Automated alerts when new opportunities are posted in your industry classification

Miguel
Hillary
Keith Deutsch
Christine

Join 650+ contractors already using CLEATUS

Dotted
NAICS 336611 FAQ

Frequently Asked Questions

NAICS code 336611 covers Ship Building and Repairing. This U.S. industry comprises establishments primarily engaged in operating shipyards. Shipyards are fixed facilities with drydocks and fabrication equipment capable of building a ship, defined as watercraft typically suitable or intended for other than personal or recreational use. Activities of shipyards include the construction of ships, their repair, conversion and alteration, the production of prefabricated ship and barge sections, and specialized services, such as ship scaling. Illustrative Examples: Barge building Cargo ship building Drilling and production platforms, floating, oil and gas, building Passenger ship building Submarine building Yachts built in shipyards Cross-References. Establishments primarily engaged in--

Recently Posted in Ship Building and Repairing

NAICS: 336611
Awarded
DIBBS
HATCH, MARINEThe Defense Logistics Agency awarded Contract SPE7M026P1144 to JUNIPER ELBOW CO. INC. (CAGE 97537) on July 13, 2026, for the procurement of a single item: a marine hatch (NSN 2040014549520), with a total value of $49,278.00. The contract originated from solicitation SPE7M0-26-T-3037 and was issued as a modification under Standard Form 30, reflecting administrative updates rather than a full solicitation process. The contractor is located in Middle Village, New York, and the delivery and performance are expected to occur at this address. The award falls under NAICS code 336611, which relates to ship and boat building and repairing. The contracting officer is Kelly Drees of DLA Land and Maritime, with payment administration handled through DLA Land and Maritime at PO Box 3990, Columbus, Ohio. No separate contracting officer’s representative or technical representative information is provided, and the contract lacks explicit details on delivery timelines, FOB terms, or quantities beyond the single line item. Acceptance is the responsibility of the government, with final documentation to be returned to the Columbus office, although the exact inspection or acceptance location is not formally specified. The contract incorporates FAR clause 52.222-90 addressing DEI discrimination by federal contractors, with an approved deviation effective April 2026, requiring the contractor to adhere to related compliance and reporting obligations under the Post Award Request system via DIBBS. No other FAR clauses, special requirements, or technical specifications such as MIL-STDs are explicitly referenced in the documentation. The contractor's socioeconomic status and small business designation are not stated, and while the CAGE code is confirmed, the Unique Entity ID is not provided. There are no itemized pricing details, option periods, or extended quantities listed, and no packaging, marking, or inspection criteria beyond administrative compliance are included. The contract was awarded without published evaluation factors, basis of award methodology, or cost realism analysis, indicating a streamlined or non-competitive acquisition under simplified acquisition procedures. All communications, modifications, and post-award actions are to be processed through the DIBBS portal, with no attachments or supplemental documents identified in the publicly accessible portions of the award notice.
Defense Logistics Agency

POSTED

1 day ago

DEADLINE

N/A
View Details
NAICS: 336611
Awarded
DIBBS
SCUTTLE, MARINEThe Defense Logistics Agency has awarded a contract to JUNIPER ELBOW CO. INC. with CAGE code 97537 for a total price of $42,000.00, with the award issued on July 13, 2026, under solicitation SPE7M4-26-T-3344. The contract is for the supply of one line item: SCUTTLE, MARINE, identified by NSN 2040013647332 and PR 7014656114, which is a specialized maritime component intended for federal use. The award notice was posted via the DIBBS system and reflects a direct federal acquisition with no specified set-aside provisions or NAICS code. Performance location and point of contact details are not provided, and the contract is managed under the Department of Defense with no additional geographic constraints listed. The official record can be accessed through the DIBBS system using the provided UI link.
Defense Logistics Agency

POSTED

1 day ago

DEADLINE

N/A
View Details
NAICS: 336611
New
Federal
USS TRIPOLI (LHA-7) Seawater Flushing Piping in 02 Deck Through 2nd Deck Level; replaceThe Offeror must hold an active U.S. Navy MSRA/ABR Agreement specifically for the Japan Region and provide proof of this agreement as part of the proposal. Those without an active agreement must submit a copy of their approved and current MSRA/ABR agreement as a Prime Contractor to be considered eligible. Only sources authorized to operate and do business in Japan under DFARS 252.225-7042 are eligible to respond; contractors located outside Japan must provide unambiguous documentation demonstrating compliance with this regulation, or they will be disqualified from award. Failure to possess an active MSRA or ABR in the Japan Region, or refusal to execute such an agreement prior to job order award, will result in ineligibility for contract award. The solicitation, numbered N6264926Q0461, seeks services for replacing seawater flushing piping on the USS TRIPOLI (LHA-7) located in Sasebo, Nagasaki, Japan, with responses due by July 22, 2026, and is managed by the Naval Supply Systems Command Fleet Logistics Center Yokosuka under NAICS code 336611.
Navsup Flt Logistics Ctr Yokosuka

POSTED

1 day ago

DEADLINE

in 7 days
View Details
NAICS: 336611
New
Federal
RFP - VCS Devices Piece PartsThe Naval Surface Warfare Center Carderock Division is soliciting proposals under solicitation number N0016726R1004 for machining services to fabricate nickel aluminum bronze canisters intended for use in the Virginia-Class propulsor manufacturing program. The solicitation is a total small business set-aside under FAR 19.5, with NAICS code 336611 indicating the industry classification for ship and boat building and repairing. All proposals must be submitted electronically through the PIEE Solicitation Module by the closing date of August 7, 2026, at 9:00 PM Eastern Time. The contracting office is located in Bethesda, Maryland, with primary point of contact Jordan Good and secondary contact Abeer Ameer available for inquiries. The place of performance and detailed delivery schedule have not been specified in the available information, nor have technical specifications, inspection criteria, or packaging requirements been provided. There is no disclosed estimated contract value, and while the solicitation form and evaluation factors are referenced in metadata, their content could not be retrieved. No special requirements such as bonding, insurance, or key personnel provisions were identified, and no representations, certifications, or attachments are listed. Offerors must ensure compliance with small business set-aside eligibility and submit responses via the designated portal prior to the deadline.
Nswc Carderock

POSTED

1 day ago

DEADLINE

in 24 days
View Details
NAICS: 336611
New
Federal
Manufacture of Heated Window Assembly (Part No. CC-10367-1)The contract entails the design, fabrication, and delivery of a single Heated Window Assembly, identified by part number CC-10367-1, to exact specifications required by the OEM for installation aboard the USS Wichita. The assembly must include all necessary materials and integrated heating elements that meet rigorous performance and safety standards for marine environments. The work involves comprehensive engineering oversight to ensure compatibility with the vessel’s existing systems, along with rigorous testing protocols to validate thermal efficiency, durability under extreme conditions, and structural integrity. The contract is classified as a subcontract issued under the NAICS code 336611, which pertains to ship and boat building and repairing, and is managed by the Naval Supply Systems Command Fleet Logistics Center Jacksonville. Performance is required at the facility located in Jacksonville, Florida, with a posting date of July 13, 2026. The project is part of a broader Department of Defense initiative to maintain and upgrade naval vessel equipment, and the successful contractor must align all deliverables with federal defense standards, ensuring full traceability, quality control, and timely completion without deviations from the specified technical requirements.
Navsup Flt Logistics Ctr Jacksonville

POSTED

1 day ago

DEADLINE

N/A
View Details
NAICS: 336611
New
Federal
6A1 Preventive Maintenance for Puget Sound Naval Shipyard (PSNS)Barge YR-85 and YR-95This solicitation, N6264926RA054, seeks a firm fixed-price job order under an existing Master Agreement for Repair and Alteration of Vessels (MARAV) for the preventive maintenance of the Puget Sound Naval Shipyard barges YR-85 and YR-95, to be performed at Yokosuka Naval Base, Japan. Only contractors holding an active Master Ship Repair Agreement (MSRA) or Agreement for Boat Repair (ABR) with the U.S. Navy are eligible; all others are ineligible unless they initiate a year-long certification process, which cannot be completed in time for this solicitation. Proposals must be submitted electronically by 10:00 AM Japan Standard Time on August 10, 2026, and must include a completed SF-33 form, a detailed price breakdown using Attachment (II), warranty tracking information from Attachment (V), and all other required documentation in English, compatible with Microsoft Office 2016 or Adobe Acrobat Reader 2017. Access to detailed work specifications in Attachment (I) is restricted and requires a prior request to designated Navy email addresses by July 31, 2026, with access limited to 14 days once granted. The contract is awarded on a Lowest Price Technically Acceptable (LPTA) basis, requiring all offers to meet pass/fail gates for fair and reasonable pricing, technical acceptability, past performance, and responsibility under FAR 9.104. Performance is to occur aboard the vessels at Yokosuka from August 15 to October 15, 2026, with full compliance required for 29 CFR 1915 occupational safety standards, NAVSEA and SRF-JRMC local standards, and MIL-STD-129 for packaging and marking. All hazardous materials delivered must be labeled per the Hazard Communication Standard, with labels and safety data sheets submitted pre-award. The contractor must use WAWF for electronic invoicing and receive government property in accordance with FAR 52.245-1 and 52.245-9. The contract includes clauses for changes, termination, stop-work orders, bankruptcy, and safeguarding of covered information systems under DFARS 252.240-91 and 252.240-93. The offeror must be registered in SAM.gov with current representations and certifications
Navsup Flt Logistics Ctr Yokosuka

POSTED

1 day ago

DEADLINE

in 26 days
View Details
NAICS: 336611
New
Federal
USS RUSHMORE (LSD-47) BALLAST TANKS PRSV N6264926R0047The contract pertains to the preservation of ballast tanks on the USS RUSHMORE (LSD-47) and is assigned under solicitation number N6264926R0047. Performance is limited to Commander, Fleet Activities SASEBO in Sasebo, Nagasaki, Japan, and the work must be executed by companies holding an active Master Ship Repair Agreement or capable Agreement for Boat Repair, with authorization to operate solely within Japan. The period of performance spans from October 12, 2026, to July 30, 2027, with a response deadline for proposals set for August 17, 2026. The solicitation was issued by the NAVSUP Fleet Logistics Center Yokosuka Site SASEBO and falls under NAICS Code 336611 for ship building and repairing. No set-aside provisions apply, and the primary point of contact is Yuki Takemori, reachable through the provided U.S. Navy email address. All interested parties must confirm their eligibility and authorization to conduct work in Japan before submitting a response.
Navsup Flt Logistics Ctr Yokosuka

POSTED

1 day ago

DEADLINE

in about 1 month
View Details
NAICS: 336611
New
Federal
CGC GREENBRIER DRYDOCK REPAIRS FY27The U.S. Coast Guard is seeking qualified sources to perform drydock repairs on the USCGC GREENBRIER (WLR 75501), a 75-foot river class buoy tender cutter with a 130-foot barge, homeported in Natchez, Mississippi. The anticipated period of performance is from January 12, 2027, to March 23, 2027, with all work to be conducted at the contractor’s facility. The requirement falls under the Heartland District and adheres to NDAA FY 2021 Section 8820 and Section 8220 provisions governing vessel repairs and conversions. The scope encompasses over 60 detailed work items covering hull inspections, plating replacements in multiple steel gauges, propulsion system overhauls including shafts, bearings, seals, and propellers, keel cooler maintenance, cathodic protection renewal, rudder and spud repairs, tank cleanings, preservation of underwater and freeboard surfaces, deck and superstructure maintenance, and temporary services. Both the cutter and barge require comprehensive attention to structural, mechanical, and protective systems to ensure operational readiness. Interested parties must respond by July 22, 2026, to the designated Point of Contacts, providing their company name, address, Unique Entity ID, CAGE code, primary contact details, and a clear statement of intent to bid as a prime contractor. Respondents must also specify their business size classification under NAICS code 336611 and provide supporting documentation to validate any small business designations including 8(a), HUBZone, SDVOSBC, VOSBC, EDWOSB, or WOSBC. The Coast Guard will use these responses to determine whether the contract will be set aside for small businesses or remain unrestricted, after which a formal solicitation will be published on SAM.gov. All proposals must be submitted via email and include full certification records to be considered.
Sflc Procurement Branch 2(00085)

POSTED

1 day ago

DEADLINE

in 8 days
View Details
NAICS: 336611
New
Federal
USS MTW FY27 MID-TERM AVAILABILITY (MTA)The USS Mount Whitney FY27 Mid-Term Availability (MTA) solicitation, identified by N6817126RN006, is a Department of Defense procurement issued by the Navsup FLC Sigonella Naples Office to secure comprehensive maintenance, repair, and logistical support services for the USS Mount Whitney during a fixed 12 January 2027 to 13 March 2027 period. The work must be performed at a pier-side facility located within the Mediterranean basin or the European Atlantic Ocean coastline, encompassing the United Kingdom, Ireland, the Netherlands, Belgium, France, Spain, Portugal, and the Atlantic coast of Germany. The contract scope includes labor, materials, and equipment for a broad array of work items, such as the inspection, testing, calibration, and servicing of shipboard systems including gauges, thermometers, meters, fire doors and shutters, the Vessel Control System, and deck drains, all conducted in compliance with ANSI, ISO, NFPA, SOLAS, ABS, and General Technical Requirements 1 through 7, 22, 23, 24, 28, and 29. All equipment and surfaces must be properly marked with manufacturer identification, lifting and tiedown instructions, safe working loads, fuel type warnings, and certification plates, with all labels and hull markings preserved and restored using stainless steel CRES 316/316L plates. The contract is structured with a base award of $50,500 for Category A standard work items and includes optional Category B work items whose activation must not extend beyond the scheduled completion date, along with an Anticipated Growth Requirement (AGR) for up to 20,000 labor hours at a specified rate. The total estimated contract value is $1,050,500, with additional support services such as shore power, water disposal, crane lifts, and IT and security services integrated into the pricing model using daily rates for potential extensions. Compliance with stringent safety and access protocols is mandatory, including submission of a ships access list 96 hours prior to performance, 24-hour advance notice for inspections, implementation of fall protection systems, adherence to lock-out/tag-out procedures, and provision of personnel lists with security clearances. The Government retains full oversight authority through the OMT REP, who serves as the final authority on work acceptability, and may deploy quality assurance observers without notice, while requiring full documentation including
Navsup Flc Sigonella Naples Office

POSTED

1 day ago

DEADLINE

in 8 days
View Details
NAICS: 336611
Awarded
Federal
Medium Landing Ship (LSM) Vessel Construction Manager (VCM) Solicitation # N00024-26-R-2421TOTE Services LLC of Jacksonville, Florida, has been awarded a contract to serve as the Vessel Construction Manager for the new construction of up to eight Medium Landing Ships, responsible for awarding and managing subcontracts with shipbuilders. The contract was competitively procured through the System for Award Management website, with only one offer submitted, and is identified by solicitation number N00024-26-R-2421. The work is centered on oversight and coordination of shipbuilding activities, with performance based in Jacksonville, Florida, while the awarding office is located at the Navy Yard in Washington, D.C. The action falls under NAICS code 336611 for ship building and repair. Point of contact for the contract includes Stuart Grosvenor and Elizabeth Feliciano-Hernandez from the Naval Sea Systems Command. This award notice is informational and does not represent a government commitment to solicit or award additional contracts, nor does it obligate the government to pay for any information provided in response to this notice. All details remain subject to modification and carry no binding obligation for future action.
Navsea Hq

POSTED

1 day ago

DEADLINE

N/A
View Details
NAICS: 336611
New
Federal
N5523626Q0101 - GRAVING DOCK NON SKID REPLACEMENT SERVICEThis solicitation, identified as N5523626Q0101, is a total small business set-aside for the procurement of graving dock non-skid replacement services at the Southwest Regional Maintenance Center in San Diego, California, under the Department of Defense. The effort is being processed exclusively under FAR Part 12 for commercial items, with quotes due by July 21, 2026, and performance required between July 31, 2026, and September 30, 2026. Only small businesses classified under NAICS code 336611 – Shipbuilding and Repairing – are eligible to respond, and submissions from large businesses will be deemed ineligible for award. The solicitation incorporates all federal acquisition provisions and clauses in effect through Federal Acquisition Circular 2026-01 and DFARS Publication Notice 20260507. All information necessary for submission is contained within this combined synopsis/solicitation, with no separate written solicitation to be issued. The point of contact for inquiries is Esther Cing, with secondary support from Jorge Morales, both reachable via Navy email and phone. No contract value, pricing, inspection criteria, packaging requirements, evaluation factors, or detailed statement of work are provided in the available data.
Southwest Regional Maintenance Center

POSTED

1 day ago

DEADLINE

in 7 days
View Details
NAICS: 336611
New
Federal
USS TRIPOLI (LHA-7) No.4 SSDG Component; repairThe solicitation requires all offerors to hold an active U.S. Navy MSRA/ABR Agreement specifically for the Japan Region, and those without one must provide a copy of their approved and current agreement as a Prime Contractor with their proposal. Contractors not based in Japan must submit clear documentation proving compliance with DFARS 252.225-7042, demonstrating their legal authority to operate and do business in Japan; failure to do so disqualifies them from award. Additionally, any offeror without an active MSRA or ABR in Japan or unwilling to execute such a master agreement before job order award will also be ineligible. The contract is for the repair of the No.4 SSDG Component aboard the USS TRIPOLI (LHA-7), with performance required in Sasebo, Nagasaki, Japan. The solicitation is issued by the Naval Supply Systems Command Fleet Logistics Center Yokosuka, with proposals due by July 21, 2026, and is exclusively available to entities authorized to conduct business within Japan.
Navsup Flt Logistics Ctr Yokosuka

POSTED

1 day ago

DEADLINE

in 6 days
View Details

Win Contracts in Ship Building and Repairing

Get AI-powered intelligence on NAICS 336611 procurement

Real-time contract opportunities for NAICS 336611 (Ship Building and Repairing)

AI-powered matching based on your business capabilities and past performance

Competitive analysis of contractors winning awards in this industry

Automated alerts when new opportunities are posted

Miguel
Hillary
Keith Deutsch
Christine

Join 650+ contractors already using CLEATUS