One of the problems encountered when towing oceanographic instruments is the cable length required to get the equipment to the optimal depth. A typical ratio of cable length to tow...

As noted in the previous issue of Hydro International, at least 200 seamounts had been discovered prior to the Second World War. The advent of acoustic sounding systems and the...

For the past 16 months an extensive search has been underway for the missing Boeing 777 of Malaysia Airlines (MH370) in the Indian Ocean. Since a piece of debris was...

Autonomous underwater vehicles (AUVs) are a recurrent theme in maritime and offshore applications, and in particular those involving long and costly data-gathering operations such as hydrographic surveys. Challenging surveys like...

The Indonesian Association of Marine Survey Contractors launched a survey operation in early January 2015 to support the Indonesian National Agency for Search and Rescue. The operation was aimed at...

Following the capture of Morotai in the Dutch East Indies, the stage was set for the invasion of the Philippine Islands. The liberation of the Philippines was a blur of...

It was a rainy day at Woods Hole, Massachusetts, USA. The scenery reminds me of the Twin Peaks atmosphere. I am about to interview Mike Purcell, the man whose search...

Sprinkled throughout the world’s oceans are thousands of named seafloor features. Many of the major features have received names that associate them with some other geographic feature such as Mid-Atlantic...

North Atlantic hurricane season is now upon us. Until well into the twentieth century there was little understanding of the nature of hurricanes and no adequate system to warn mariners...

The Underwater Inspection System (UIS) from CodaOctopus has been the subject of evaluation by the United States Coast Guard Research and Development Center (USCG). An interim report provides an update...