Over 110 Years of Marine Engineering Excellence

From humble beginnings in 1912 to a trusted name in marine propulsion across NSW and Australia, DH Porter has built a legacy of craftsmanship, precision, and service. Explore our story and the people who continue it.

D.H. Porter & Co Pty Ltd - Company History

Founded: 1912
Founding Location: Druitt Street, Sydney, NSW
Current Location: 83A Grose Street, North Parramatta, NSW
Current Legal Entity: D.H. Porter & Co Pty Ltd (ABN 63 689 771 873)
Current Directors (2025): Joshua Ryland and Christopher Bonnici
Business Type: Marine engineering specialists in propulsion systems: manufacture, supply, and repair

Origins and Early Years (1912 to 2002)

D.H. Porter was established in 1912 in Druitt Street, Sydney, and built its reputation in the marine engineering sector by specialising in marine propulsion equipment and stern gear. Over the decades, it developed strong ties with both local and international markets, servicing a mix of private and commercial marine clients. The company earned its standing through the consistent delivery of premium-quality components, technical precision, and dependable service.

Corfield Ownership and Relocation (2002 to 2025)

In 2002, the business was acquired by Glenn and Fiona Corfield, who have owned and operated it since then. Glenn brought over 40 years of experience in the marine industry and remains directly involved in quoting and workshop oversight, while Fiona has managed the administrative and financial operations.

Shortly before acquisition, the business relocated to its current premises in North Parramatta, where it has remained for over 20 years. The site includes two small office spaces, a large workshop for manufacturing, a mezzanine storage area, and equipment including CNC machinery, fabrication tools, and Prop Scan optimisation systems.

Reputation, Growth and Services

Under the Corfields’ leadership, DH Porter has continued its legacy, now with over 110 years of operation. The company specialises in:

• Propellers (fixed, folding, feathering)
• Shafts, couplings, rudders, skegs, bearings, and stern gear assemblies
• CNC-manufactured fittings
• Servicing and optimisation using Prop Scan E4 technology

The client base is broad, covering private boat owners, marine mechanics, shipwrights, and defence contractors. The business has historically grown through word of mouth and referrals, rather than marketing.

Notable Projects and Associations

DH Porter has been involved in notable restoration and commercial marine projects, such as work for Scarborough Engineering, Sydney Wooden Boats, Buizen Yachts, Pacific Boating, Palm Beach Motor Yachts, and Captain Cook Cruises.

Current Ownership - A New Chapter (2025 to Present)

In 2025, the business was acquired by Joshua Ryland and Chris Bonnici, two long-time friends and business partners with deep experience in engineering, manufacturing, hydraulics, and technical sales.

Joshua and Chris bring a shared commitment to DH Porter's core values, precision, reliability, and responsive service, while leading the company into its next phase of growth. Their focus is on operational excellence, continuous improvement, and strengthening DH Porter's reputation as a trusted partner for marine professionals.

Backed by a strong team, modern systems, and over a century of industry heritage, Joshua and Chris are proud to build on DH Porter’s legacy and ensure its continued relevance and impact in the marine sector for years to come.

Conclusion

DH Porter remains one of Sydney’s most established marine engineering companies. From its humble beginnings in 1912 to a modern specialist operation with CNC and precision balancing capabilities, the business has retained its core ethos of engineering excellence, personal service, and marine craftsmanship.