Experts are extremely concerned about the temperature of the Pacific Ocean, as the sea surface temperature this year was the warmest since satellite measurements began. This c...

The US space agency NASA has successfully pushed the asteroid Dimorphos out of its original orbit in the universe, according to a recent announcement. The space rock was hit 11 mil...

In 1972, The Limits to Growth saw the light of the day, a report published by the Club of Rome. The message: to keep the Earth liveable, we must control economic growth. To think t...

While online data acquisition is of course of the utmost importance in hydrography, technological developments mean that modern surveyors also need to know about data science, mach...

My first association with 'Surveys in extreme conditions', this issues theme, is surveying in the hostile cold of the Arctic or the Antarctic waters. However when talking to people...

Dredging in navigational channels, ports and harbours is intended to help the mariner navigate safely, with enough under-keel clearance. However, charting is not always uniform. To...

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 i...

On behalf of the entire Hydro International team, I wish you a healthy and prosperous New Year. And to those readers who celebrate the start of a new year on a date other than 1st...

A whale, later identified as a northern bottle-nosed, was reported swimming in the river Thames in central London at the end of January, and was thereafter watched by crowds lining...

This is an OI-special issue, in that it pays special attention to the Oceanology International London 2004 conference and exhibition. This latest in a well-known and well-visited s...

Until recently surveyors had far more accurate positioning equipment at their disposal than did general shipping. To name a few examples of the then modern electronic equipment: De...

The theme of this issue is Hydrography for Exploration. I would like to draw your attention to the interview with Roger Lott, Head of Survey for BP Exploration. In this interview,...

On nautical charts bottom type is classified by its composition. For instance, ‘S’ indicates a sandy bottom; ‘R’ is for rock, while ‘Sh’ depicts shells. However, you seldom find si...

As we all know, hydrography means different things to different people, even amongst our readership. For example, physical oceanographers see it as measuring and describing the phy...

Mariners of my generation were taught to take positions by visual bearings (Yes, I know I am turning grey) and practise it as radar was only to be used in fog. While apprentices an...

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...

Hydrography and defence have had a peculiar relationship over the centuries. On the one hand, the possession of good nautical charts and other information gave predominance over t...

Geohazards (geological features or processes) can be a risk to oil and gas infrastructure, and to the environment. Landslides, fault ruptures, gas/fluid expulsions, adverse soil co...

The tide obeys neither Prince nor Crown, twice a day it goes up and down”. This is a translation of an old, Dutch proverb, and no doubt most sea-bordering languages will have...

Question: What did you, your organisation or company do on World Hydrography Day (in case you forgot: the 21st of June) to promote hydrography outside the circle of the hydrograph...

The rising economies of countries such as India and some in the Far East, and increasing world trade, will further boost port construction. Likewise, the entry of new eastern Euro...

The theme of this issue, environment, is a good example of how many aspects of environment and hydrography are related and how aspects of hydrography are interrelated. We all know...

Inspired by the Austrian explorer and naval officer Lt. Karl Weyprecht, an international meteorological congress was held in Vienna (Austria) in 1873, which resulted in the Interna...

The article ‘GEBCO and Deep Water’ (see page 7) by David –Monahan draws attention to the need for more deep-survey data, implying not only the discipline of having equipment runnin...

HYDRO ’96 in Rotterdam marked the birth of the idea to launch a magazine for the hydrographic survey industry. Less than four months later, the first issue of Hydro International a...