21 Knots Design and Consulting is an emerging design, engineering and consulting firm providing services to Global Maritime and Oil & Gas industry.

Our team of Naval Architects, Structural Engineers and Marine Engineers, along with industry experts, combines industry experience and knowledge with enthusiasm, creativity, and dedication to develop and deliver custom-made solutions.

21 Knots started operations in 2013 with a focus on introducing innovations in engineering solutions in India. Since then, we have delivered quality services to numerous clients in the marine and offshore industry. We are a small, tight-knit group of engineers led by Naval Architects from IIT Madras. We operate from our head office in Mumbai, India and have associate offices in Singapore, Dubai, and the USA.

We are an ISO 9001:2008 certified company. Our team is motivated by continuous design improvements and ensures superior quality throughout the design, engineering and consulting process.


  • Ship Design
  • Ship Conversion
  • Retrofit and Upgrade
  • Naval Architecture Services
  • Vessel Performance Systems
  • Marine Software
  • Ship Reflagging
  • Offshore Services
  • Survey Supervision
At 21 Knots, we constantly strive to solve challenging industry problems. We contribute to the increasing global emphasis on a cleaner future for humankind. Our tailor-made solutions are driven by reduced energy consumption, green alternatives, and cost-effectiveness.

Opening Hours


9 am - 5 pm


9 am - 5 pm


9 am - 5 pm


9 am - 5 pm


9 am - 5 pm





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We are certified by...

NOTE: Only IACS members are listed (International Association of Classification Societies)

American Bureau of Shipping - ABS

Bureau Veritas - BV

China Classification Society - CCS

Croatian Register of Shipping - CRS


Indian Register of Shipping - IRS

Korean Register of Shipping - KR

Lloyds Register - LR

Nippon Kaiji Kyokai - NK

Polish Register of Shipping - PRS

Registro Italiano Navale - RINA

Russian Register of Shipping - RS

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