The Isle of Man is a self-governing British Crown Dependency situated in the Irish Sea between Great Britain and Ireland. Crime rates are very low, and the island has an efficient police service. The primary risks are weather-related; the Irish Sea can be rough, and winter storms may disrupt ferry services and flights. Noble's Hospital in Douglas provides good medical care, with transfers to the United Kingdom available for specialised treatment. During the annual TT (Tourist Trophy) motorcycle races in late May and early June, roads across the island are closed for racing, and visitors should exercise particular caution.