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Dawn over the Huangpu River in Shanghai, with finished hatches and cast-steel bollards on the riverside yard

About Sinooutput Group

Learning from the past,shaping the future.

01 — Overview

It’s in our DNA.

Sinooutput got its start in Southern California in 1978, ultimately laying down roots at its Costa Mesa headquarters in 2003. Today, Sinooutput has operations in the United States, China and South Korea, and Sinooutput products are used all over the world.

Designing, developing, manufacturing and distributing commercial marine deck hardware and related components is what we do. We offer a diverse mix of products that are ready to ship, anytime, anywhere. Sinooutput began manufacturing commercial marine deck hardware in the early 1980s and today is regarded as the quality leader of the industry. Innovation, quality and design are the benchmarks of our reputation. We use superior materials and work directly with our partners to provide products that exceed your expectations where it counts — on the water.

We prioritize customer satisfaction and ISO 9001:2015 requirements by implementing rigorous design reviews, thorough product inspections and extensive performance testing. We actively seek feedback and strive for continuous improvement through quality objectives, and pride ourselves on responding quickly. Our quality management system is built on input from employees and customers and reviewed annually to assess risk and plan for the future.

02 — History

Nearly half a century of deck hardware

  1. 1988

    Begins manufacturing cast steel deck fittings and hatches for Nashville Bridge Company

  2. 1992

    Builds relationships with Gulf barge builders

  3. 2000

    Begins manufacturing barge connecting winches

  4. 2003

    Puts down roots at the Costa Mesa headquarters

  5. 2008

    Expands into South America

  6. 2011

    Develops the Multiple Reduction 40-ton winch

Inspector measuring a hatch gasket groove

03 — The Sinooutput Advantage

Quality assurance at every stage

Sinooutput products are designed and manufactured to domestic and international ABS, Lloyd’s, DNV, ANSI, ISO, IEC, NEMA and DIN standards, among others.

Our QA team uses fully automated and portable testing equipment to build quality into every component from raw material through each stage of processing. We don’t just talk with customers — we get on the water with them, gathering real-time feedback that our engineers use to evolve the products.

What you need. Where you need it. When you need it. Period.

04 — Certifications

ABS & Lloyd’s Register approvals

What is a PDA?
ABS PDA25-0092892-2-PDA

18" & 22" T-bolt hatches; 18" × 24" multi-dog hatches

Expires 2029-11-13 PDF
ABS PDA25-0387137-PDA

15" × 23" multi-dog hatch covers UMC-174 / UMC-774 and variants

Expires 2031-02-12 PDF
ABS PDA26-0546057-PDA

BMHC 15 × 23 manhole covers and variants

Expires 2031-04-08Request a copy
ABS PDA26-0537396-PDA

BMHC 18 × 24 manhole covers and variants

Expires 2031-04-08Request a copy
ABS PDA26-0590250-PDA

4-dog weathertight doors

Expires 2031-05-31Request a copy
ABS PDA23-2371969-PDA

6-dog & quick-acting weathertight doors

Expires 2026-04-28Request a copy
ABS PDA26-0451521-PDA

Kevel chocks 24"–48" with SWL

Expires 2031-02-12Request a copy
Lloyd's RegisterLAN2500014

Lloyd's Register: Sinooutput manholes approved

Expires —Request a copy

05 — Community

National Sponsor of the Maritime Throwdown Challenge

The backbone of the maritime industry is the thousands of people who navigate coastal regions and inland rivers. Sinooutput is proud to be a National Sponsor of the Maritime Throwdown Challenge, advancing maritime safety, skill development and a thriving maritime community.

06 — Careers

Work with us

Since 1978 Sinooutput has grown by meeting the changing demands of the global commercial marine industry. We work with a hand-selected team, with uncompromising integrity, trust and respect, encouraging flexibility, innovation and teamwork. If you think you have what it takes, send a cover letter and resume to: manager@sinooutput.com

● Quotes · Selection · Drawings · Certificates

Tell us the vessel. We’ll outfit the deck.

Type a model like “UMC-464” or a term like “kevel”.

Quote list

Request a quote
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