The 500 pound World War Two device was picked up during dredging work.
Dorset Police See 14% Rise In Recorded Crime
New stats show Dorset's seen a 14% rise in recorded crime in the last year - while violent crime's up 37%.
Police say it's mainly due to a change in how reports are recorded.
Nationally, violent crime's shot up by a quarter. Figures have been released today, 20 October 2016, by the Office for National Statistics (ONS). The figures are for the year 2015/16 (1 July 2015 to 30 June 2016) compared with the previous 12 month period.
Deputy Chief Constable James Vaughan said:
"Dorset Police has worked hard to improve our compliance with the complex Home Office Counting Rules, and to ensure the public are confident to report crime to us.
"We have demonstrated we are fully committed to meeting the very high standards set out by the government on crime recording, which are inspected through HM Inspectorate of Constabulary (HMIC).
"As a consequence of improved practice, the Force is publishing increases in total crime which I wish to reassure you is due to a greater emphasis being placed on accuracy.
Dorset Police said:
'Changes to crime recording over the past 12 months have also had an effect on the figures released today.
'One significant change is the inclusion of malicious communications into the category of 'harassment' and therefore into the broad category of 'violent crime'. This contributed to a 37% rise in total violent crime.
'Other increases have resulted from focused police activity, such as the work of the Paedophile Investigation Team proactively seeking out offenders.
'As a result of the work of the Dorset Police Safeguarding Referral Unit and referrals from other partner agencies, Dorset has also seen an increase in reports of child neglect.
'Dorset is among a minority of police forces that were graded as 'Good' in the HMIC vulnerability inspection last year. The Force was praised for its work to encourage people to report sexual offences, domestic abuse and other crimes involving vulnerable victims.'
Deputy Chief Constable Vaughan added:
"Our safeguarding activity and our victim-focused approach has led to more people coming forward to report crimes affecting the most vulnerable in the county. We make no excuse for encouraging people to report such crimes - whatever impact that has on statistics.
"I can reassure people that Dorset remains a safe place to live, work and visit. The officers and staff of Dorset Police are committed to ensuring it stays that way."
Acting Dorset Police and Crime Commissioner, Colin Pipe, commented: "Ensuring that people feel confident reporting crime, whatever their situation, is a critical part of British policing.
"I am confident that the increase we are seeing is due to this enhanced trust, along with better recording practices, reflecting trends nationally. This rise has been articulated to the media and to the public many times in the last nine months, before these official figures were released.
"Reducing the overall number of victims of crime in Dorset is a long term objective of the Commissioner's second term in office and Dorset Police will continue to adapt with the changing nature of policing to aim at achieving that."
640 men were killed when the South African troop carrier was hit by a cargo ship in 1917.
The 79-year-old man suffered a serious head injury in the Cranmer Road car park in Winton.
Two Girls Indecently Assaulted Last Sunday
Recently Played Tracks
Now playing: Non-stop hit music
Deposit £10 to get a £40 Welcome Bonus - That's £50 to play bingo, slots and more!*
Over 50 tracks to make you feel-good. New album out now...
Find your local four day weather report here.
What's happening on the roads where you are?
Make Heart the soundtrack to your day and you could be a winner with great prizes up for grabs throughout the day.
Find out more about some of the companies advertising on Heart.
Get some great ideas on how to advertise your business on radio, online and on mobile.