The police officers, who volunteer for the specialist role on top of their other duties, conducted a series of routine search exercises at the Trent embankment last week.
Tuesday’s exercise was observed by a number of interested spectators, including children from a local nursery school who posed for pictures with diver PC Steve Craner after watching him emerge from the water.
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PC James Patterson, Dive Supervisor at the Underwater Search Unit, said: “A lot of people associate our work only with missing person searches, but there are also a lot of crimes where people discard key bits of evidence in the water.
“We use a number of techniques to find those items and have helped to solve several murders around the country where items such as mobile phones have been recovered from the water.”
“It’s a really great team to be a part of and can come with a great sense of achievement – whether that’s finding a key bit of evidence, or returning a missing person back to their loved ones.”
