On board during mine-sweeping exercise in Gulf
The largest international anti-mine warfare exercise is taking place in the Gulf over the next few weeks.
More than 6,500 military personnel from more than 40 countries are involved, along with 35 warships, including several from Britain's Royal Navy.
The exercise will be conducted close to the Strait of Hormuz - the narrow shipping channel that passes Iran.
Iran, which has in the past threatened to block the gulf, says it is closely monitoring the exercise.
The BBC's defence correspondent Jonathan Beale reports.