Commercial Vessel Compliance

5/7/2018: Updated FAQS – ballast water management system type approvals

The Marine Safety Center posted updated Frequently Asked Questions to its Ballast Water Management Type Approval Management webpage. These FAQs, current as of April 24, 2018, are updated regularly to help the ballast water community better understand and navigate the type approval process.

Other information available on the Ballast Water Management Type Approval Management webpage includes:

  • Approved BWMS and status of applications
  • Copies of type approval certificates
  • MSC rulings on Most Probable Number (MPN)
  • BWMS type approval review checklist
  • Accepted Independent Labs (IL)
  • Letter of Intent Register
  • IL checklist
  • Existing data and test facility acceptability


For all BWMS type approval questions, except questions related to Independent Laboratory requirements and acceptance, contact the Marine Safety Center at (202) 795-6760 or

For Independent Laboratory requirements, contact the Coast Guard Headquarters, Systems Engineering Division, (CG-ENG-3), Attn: Ms. Roshanak Aryan-Nejad at

This blog is not a replacement or substitute for the formal posting of regulations and updates or existing processes for receiving formal feedback of the same. Links provided on this blog will direct the reader to official source documents, such as the Federal Register, Homeport and the Code of Federal Regulations. These documents remain the official source for regulatory information published by the Coast Guard.

Leave a Reply