Harbour construction works

Tender description

Construction of a new deep water port at Glumaig Bay, within Stornoway Harbour. Procurement of contractor for a new deep water port within Stornoway Harbour. The anticipated contract works include the following: 1) dredging between 500 000 m3 and 700 000 m3 of the seabed to increase water depths to 10 m below Chart Datum at the berths and in adjoining manoeuvring areas; 2) re-use of dredge arisings to form a new platform and laydown area; removal of material unsuitable for re-use to the nearby Arnish disposal site; 3) rock blasting and associated earthworks to create infill to supplement dredge material and to clear space for the access and link roads; 4) two quay walls, one to provide part of the main berth approximately 191 m long and one of approximately 140 m to provide a berth for ferries and other ro-ro vessels; 5) an open piled finger pier approximately 119 m long to the south of and extending the main berth to approximately 310 m in length; 6) a linkspan and linkspan dolphins at the freight ferry berth; 7) a heavy lift area on the quayside to allow transfer of heavy components to and from vessels; 8) a heavy duty pontoon, 100 m long and 4 m wide, to be located at the west side of the finger pier, with an access bridge from the finger pier; 9) fendering to all berthing faces; 10) quay furniture and aids to navigation; 11) utility services (electricity, water, telecoms), external lighting, tanks for storage of marine fuel and potable water and a new substation; 12) CCTV and other safety/security measures such as fences and barriers; 13) packaged sewage treatment plant and outfalls for surface water drainage; 14) services infrastructure within the laydown area; 15) a new access road approximately 375 m long to connect the port to the existing Arnish Road; 16) a 25 m wide access link road approximately 650 m long between the new berth and Arnish Point Industrial Estate to allow the transfer of large components such as offshore modules and large windfarm components; 17) removal of elements of the wreck of the SS Alabama which are above 8 m below Chart Datum (removed elements to be placed within the footprint of the wreck). See Instructions to bidders for further information.