The 'Buddy' litter boat is operated by a cross-departmental team that goes out and cleans the harbour every day. That means it is not one but everybody's responsibility, and most people at the harbour now take more of a pride in keeping it clean.
Joe Ransley is the lock and wharf manager for Sutton Harbour and is in charge of preventing pollution, including cleaning up litter.
"A lot of rubbish is from the takeaways we have around the Barbican, and there is also a lot of plastic cups and bottles.
"There is a lot of rubbish that gets blown off the quay even this side, but now all the staff here, because they're involved in the clean-up in the water, if they're walking through the quay they will pick up any rubbish they see – because they know probably the next day they'll be out on the boat clearing it up."
He added: "Seeing all the rubbish gets you annoyed because if everybody did their bit, it would be a lot better. When I see the rubbish on the quay, I know where it will end up – in the water.
"This has a direct knock-on effect on the environment and wildlife. We have seals in the harbour, we've got swans, birds. Keeping on top of it is the main thing and I think we are doing a good job it."
Take a look at the original article with videos of the boat working https://www.plymouthherald.co.uk/news/plymouth-news/special-litter-boat-been-brought-1554585