In the previous series of interviews, Hydro international has paid much attention to conferences, standards of competence, survey companies, etc. Aiming at the total filed of hydrography we also wish...

Articles selected for this issue give a taste of the present day ‘surveyor’s world’ (this issue’s theme) - a world which is evolving. One of the co-authors of “Refloating the...

Tides and currents are giving hydrography an extra (some say challenging) aspect, which has to be accounted for. If you are measuring ‘absolute’ water depths, as do surveyors for nautical...

Satellite positioning has solved many positioning problems/aspects in our profession, and developments resulting in, for example, higher accuracy are not at an end yet: we look forward to GPS and...

Developments in science and technology bring new chances and working methods to our industry; for example, scribbling tide-pole readings in a paper notebook, although still a good working method is...

Under development since the 1980s, the completely revised chapter V (safety of navigation) of the Annex to the International Convention for the Safety Of Life At Sea (SOLAS) came into...

This month’s interviewee has over recent years dedicated his time to addressing problems in oceanography, as well as history and the contemporary state of high-level training for specialist hydrographers. He...

In 2000, Dutch Offshore Construction Company Heerema Marine Contractors (HMC) converted the anchored heavy-lift vessel Balder into a multi-purpose deepwater-construction vessel operating on DP. During conversion it was realised that...

Over the last twenty years Global Positioning System (GPS) receivers have revolutionised navigation. Integrated devices are capable of providing time, position, height, direction, heave and attitude, to accuracy of a...

The reasons for GPS vulnerability due to interference are explained and reasons behind the system being designed as it is today discussed. In addition, consideration is given to why some...