Silence and inaction - how audio helped prove captain guilty of North Sea tanker crash.
The 30 minutes of inaction from a cargo ship captain in the lead-up to a fiery North Sea tanker crash and his "striking" silence in the aftermath made it clear to police he was at fault, the chief investigator has said.
The jury saw two very different reactions to the collision when they were shown footage from the Stena Immaculate, the ship that was anchored 14 nautical miles off the Humber estuary, and footage from the Solong, the cargo ship captained by Vladimir Motin that ploughed into it, Detective Chief Superintendent Craig Nicholson said.
The force of the collision created a huge fireball and blazes on both ships, but the Humberside Police chief superintendent told the BBC it was "really, really telling" that audio from the bridge of the Solong suggested "63 seconds post-collision of abstract silence".
Motin, on Thursday, was sentenced to a six-year prison term for gross negligence manslaughter.
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Nicholson described audio from the Solong's bridge, where Motin was stationed as "just silence...with some background noises that could be muffling, or it could be the wind" in the lead-up to and in the immediate aftermath of the collision.
On the Stena Immaculate, the audio was very different.
Video footage showed a fireball erupting after the Stena Immaculate's hull is ripped open by the Solong and its cargo of jet fuel ignited by the force. Audio from the bridge tallies with the chaotic scenes.
"You hear the collision and then immediately you have an unfiltered human reaction. One of the crew swears," the policeman said.
"And then immediately... the alarms are sounded, they're talking about what's happened. They're starting the fire pumps, they're doing everything you would expect them to do."
Nicholson said audio recording played in court showed the Stena Immaculate's captain was "immediately concerned about his crew, getting his crew to the muster station and making sure his crew is safe".
During this same time audio from the bridge of the Solong told the court there were some footsteps and then a voice on the radio.
"When you overlay those two things, it's striking."