measurement science

below, above or near the waterline

our services

We measure and model anything below, above or near the waterline in any format our clients require.

We create navigational charts, calculate dredging volumes, inspect submerged infrastructure, monitor erosion, assist with the design & maintenance of marinas, help model for possible flood events, support scoping studies for oil & gas and undertake seabed & foreshore habitat mapping.

our team

Our people are amongst the most experienced hydrographic surveyors in Australasia with the highest industry recognised qualifications. Their can-do attitudes, drive and commitment to delivering an exceptional service is a key aspect of our company culture.

Discovery Marine Ltd., (DML) is New Zealand's largest hydrographic survey company.


Portable equipment means we can work anywhere, on any platform.

We've surveyed rivers, lakes & coastal zones throughout New Zealand, the Pacific Islands, the Indian Ocean, Australia and the Sub-Antarctic.
DML is a supplier to Land Information NZ (NZ's hydrographic authority), large commercial ports, the engineering & construction industry and regional and local councils.