Follows the work of a team of South Coast commercial dive engineers as they battle time and tide to keep Britain's coastlines and waterways moving.
The dive team faces a tilt on Brighton Marina's main jetty, an extensive survey of an oil tanker and an emergency call-out to repair a vital piece of cargo ferry equipment.
In Britain's biggest port, cargo grinds to a halt after a tugboat picks up a mystery object in its propeller. The team attempts to rescue a cruise liner amid a winter storm.
The Coastal Defender's dive team face a long cold swim and respond to an emergency callout.
It's a taste of the luxury life for the Coastal Defender's dive team as they fix the hull of a floating hotel.
The Coastal Defender's dive team work day and night to keep a ferry service running.
Its man versus mussel as the Coastal Defender's dive team must clear shellfish from blocking a ship's pipes.
