hydrographic, topographic & coastal structure surveys

we give clients confidence in knowing the depths & nature of submerged surfaces & structures

what we survey

We measure and model surfaces below, above or near the waterline in any format required. Our clients can rely on precise and accurate survey data. We work on oceans, coastlines, seas, lakes, dams and rivers and are adept at surveying in hard-to-reach locations.

What we deliver to clients
Data, images and 3D fly-throughs used to 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.

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

our specialists

Our people are among the most experienced hydrographic survey specialists in Australasia with the highest industry recognised qualifications including International Hydrographic Organisation (IHO) Category A and CPSH1 certification. Key leaders also have advisory roles to New Zealand's hydrographic industry.

We enjoy what we do, welcome challenges and have a genuine commitment to delivering exceptional client outcomes.

Every team member understands the full survey process including determining what needs to be done, physically undertaking the survey, analysing the data and delivering reliable survey results.

project approach

Portable equipment means we can work anywhere, on varied platforms. We work through out New Zealand, Australasia, Pacific Islands, up into the Indian Ocean & as far south as the sub-Antarctic. Our previous projects have been diverse in nature, size and scope.

Our philosophy is to first understand what our clients need and then provide the best possible solution given timing, budget and environmental conditions. Every project presents different challenges and considerations. We thrive on finding simple solutions to difficult problems.
DML is a regular service provider to Land Information New Zealand (NZ's hydrographic authority), large commercial ports, the engineering & construction industry, regional and local councils as well as private land owners and enterprise.
No job is too large or too small.