Since 1 October 1973 it has not been in use as a lighthouse, having been superseded by modern navigational technology.

We have led the industry in improving tanker safety, navigational technology and emergency response.

Historically they were laid out between VORs; however, advances in navigational technology mean that nowadays this is not always the case.

This process accelerated the development of cartographic and navigational technologies, which allowed Europeans to dominate the globe in less than a century.

Sonar and radio augmented existing navigational technology.

Until 1942 navigational technology did not allow for any more precise targeting than at best a district of a town or city by night bombing.

Until the Renaissance, navigational technology remained comparatively primitive.

The project included the construction of a modern control tower equipped with state-of-the-art navigational technology.

This trip stretches 1600 miles (South to North) and 128 days without navigational technology or stopping to resupply.

Some lighthouses were rendered obsolete by new navigational technology like sonar and on-board computerized instruments.