Formerly the deputy chief, 49 year old Gary Roberts becomes the first Island officer to take the helm.
Mr Roberts started as a constable in Douglas 28 years ago and rose through the ranks.
His predecessor Mike Langdon fostered a neighbourhood policing approach which has seen crime in the Island fall to the lowest level of any British Isles police force.
Chief Constable Roberts is committed to sustaining that policy - if funds allow:
Overnight sailings cancelled due to adverse weather
7:45pm Manxman crossing and its return have been called off
Rapist who 'terrorised' his victim told his sentence was 'entirely justified'
Fayle jailed for 18 years and 9 months
Complaints process for health system changed
Patients told to direct concerns to service used
Discovery of oiled birds 'makes a mockery of our biosphere status'
Manx Wild Bird Aid say it's a recurring problem in Peel