Waterways Ireland advises masters of vessels on the Shannon Navigation that Clarendon Lock in Co Roscommon will be closed from Tuesday 2 November until January.
This is due to essential works required to the lock in advance of replacement of lock gates planned for winter 2022/23.
Elsewhere on the inland waterway, masters and owners are advised that instream work on the new slipway south of the Athlone Lock have ceased (and on the east bank some 200m south of the weir).
Works will recommence in May 2022. Temporary yellow markers are in place around the extremities of the works area. Masters of vessels are advised to proceed with additional caution at slow speed and keep to the west bank while navigating in this area.