Founded in 1971 by Trevor Clement, Clement Marine Services humble start began with dive works maintaining harbour swimming pools carried out by Trevor and his father, before moving on to the construction of foundations for the Western Distributor around Darling Harbour.

Clement Marine Services was sold by Trevor Clement in 1983.

Mark Steele purchased Clement Marine Services in 1988 with a small barge and a workboat. Mark, originating from a carpentry background, learnt the trade from his peers over the years preceding the purchase of the company through subcontracting. One of the larger projects that Mark was employed on was the Pier 26 development in Darling Harbour, completed as part of the Darling Harbour redevelopment in 1987.

Mark used his knowledge of machinery to make several key purchases to build the assets of the company, broadening its ability to complete larger scale marine works for the time.

In 1995 Clement Marine Services constructed its first major marina in Sydney, 24 berths for the Sylvania Marina. Through the late 90’s several other marinas were constructed including the 74 berth Wollstonecraft Marina as part of the Wondakiah development for Multiplex.

This lead to the introduction of Clement Marine Services to developers, namely Multiplex who then engaged Clement Marine Services to carry out its biggest project to that date, the $8 million dollar ferry and charter boat terminal at King Street Wharf, Darling Harbour as part of the King Street Development.

Whilst contracted by Clement Marine Services through his previous employer to manage the construction of King Street, Richard Oppedisano was introduced as a young graduate engineer to Mark Steele. On completion of the project, Clement Marine Services employed Richard to help in the daily running of projects constructed by Clement Marine Services.

The introduction of the better boating program, a NSW government initiative to improve marine assets around the state, allowed Clement Marine to grow at a steady rate completing most of the boat ramp upgrades in the Sydney harbour and Georges River areas.

2011 was a turning point for Clement Marine with the award of the high profile project to replace the boardwalk around the Park Hyatt at Campbells Cove, as well as the construction of a 450t concrete pontoon and piling works at Circular Quay for NSW Maritime.

In 2013, the word Services was dropped from the title and Clement Marine is now known as Clement Marine Constructions, to assist in market understanding of the works partaken.

Since then the company has grown to have 28 staff, numerous small and large barges, cranes, excavators and vehicles to enable it to complete all facets of marine construction along the east coast of Australia and prides itself as being Sydney’s oldest, and one of its most reputable waterfront companies.



Our mission is to provide quality, performance, value and client satisfaction whilst developing a dynamic team with a skill level which is unparalleled.



Our vision is to be a trusted and innovative market leader in the marine construction industry through continuous improvement driven by passion, integrity, innovation, relationships and team spirit.


PASSION : We believe passion brings excitement and fulfilment to the job and our team.
INTEGRITY : We hold integrity as one of our highest values, and we bring quality to each and every job we undertake.
INNOVATION : We treat each project as significant and unique thus we take time to develop the best solutions and structures possible to allow the works to be executed effectively.
RELATIONSHIPS : We value each and every one of our relationships, whether it is with our clients, sub-contractors, suppliers or employees. We believe our relationships are what make our business exceptional.
TEAM SPIRIT : Where would we be without the excellent team we have? We take great pride in building our team and keeping them aligned with our company’s mission.

Key Personnel

  • Name : Richard Oppedisano

    Post : Managing Director

    Richard has worked for Clement Marine since 2000 and was appointed as a Director of the company in 2006. Richard played a big part in taking Clement Marine services to the ‘next level’. A degree qualified civil engineer, Richards’ expertise lie in business development, project management and the technical aspects of projects. Richard also manages all the HR and commercial aspects of the organisation. Richard is a hands on manager who is not afraid of helping out where required.

  • Name : Nathan Dean

    Post : Operations Manager

    Nathan joined Clement Marine in 2020 and was appointed as a director of the company in 2023. Nathan has been working in the marine industry for over 20 years and is a qualified Bridge and Wharf Carpenter.

    Nathan is responsible for the staff management, plant and equipment management and procurement. Nathan can be found on site managing staff activities or in the office working on the technical and logistical aspects of the business.