River Thames Into Limehouse Basin Only Length Beam Draught
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Reviewing navigational dimensions. South East Boaters sub group 30 November 2015 Since the last meeting David has circulated ‘Craft Dimensions Report’ dated 2003. The report was commissioned by BW and undertaken by Richard Booth, but was never adopted. The 2003 report contains a number of variances from the waterway dimension information published on the CRT website and we would like to engage some volunteers to verify the data in the report before making any alterations to the current published craft dimensions. Mindful that review dimension data for the whole network would be a major task, and could possibly identify further variances it is proposed that we take a slower approach reviewing a few waterways at a time and update craft dimension information on a rolling basis. You can view the current waterway dimensions report published on the CRT website Data from the 2013 craft dimension report produced by Richard Booth. GRAND UNION CANAL River Thames into Limehouse Basin only Length Beam Draught Headroom 28m 7.5m 91ft 24ft Regents Canal Length Beam Draught Headroom 21.95m (23.16m) 4.27m (4.40m) 2.79m 72ft (76ft) 14ft (14ft 5in) 9ft 2ins Hertford Union Canal Length Beam Draught Headroom 21.95m (23.16m) 4.27m (4.40m) 2.59m 72ft (76ft) 14ft (14ft 5in) 8ft 6ins River Thames into Brentford Basin only Length Beam Draught Headroom 22.87m (25.4m) 5.02m (5.66m) 75ft (83ft 4ins) 16ft 5ins (18ft 6ins) Note: Duplicated locks; one lock is larger than the other. Brentford Basin to Berkhamsted Length Beam Draught Headroom 21.95m (23.16m) 4.27m (4.34m) 2.49m 72ft (76ft) 14ft (14ft 3in) 8ft 2ins Berkhamsted to Braunston Length Beam Draught Headroom 21.95m 3.81m (4.16m) 2.38m 72ft 12ft 6ins (13ft 8ins) 7ft 10ins Note 1: Craft up to 4.34m (14ft 3ins) beam may be able to navigate this section, but some bridges (or former bridges) are restricted in width below water level. Note 2: Locks are at least 4.34m (14ft 3ins) wide so 2 narrowboats can safely share. Note 3: Boats over 2.13m (7ft) beam must make special arrangements for passage of Blisworth and Braunston tunnels. Contact the relevant Waterway Office for details. Braunston to head of Camp Hill Top Lock Length Beam Draught Headroom 21.95m 3.81m 1.98m 72ft 12ft 6ins 6ft 6ins Note 1: Boats up to 4.27m (14ft) beam may be able to navigate this section, but some bridges have low arches and may not be passable, depending on cabin profile. Note 2: Locks are more than 4.27m (14ft) wide so 2 narrowboats can safely share. Head of Camp Hill Top Lock to Salford Junction and Digbeth Length Beam Draught Headroom 21.95m 2.13m 2.29m 72ft 7ft 7ft 6ins Norton Junction to Foxton Junction (including Welford Arm) Length Beam Draught Headroom 21.95m 2.13m 2.52m 72ft 7ft 8ft 3ins Note: Occasionally craft of 2.13m (7ft) beam may experience difficulty in Foxton Locks. Market Harborough Arm Length Beam Draught Headroom 21.95m 3.6m 2.05m 72ft 11ft 9ins 6ft 9ins Foxton Junction to the River Trent Length Beam Draught Headroom 21.95m 4.27m 2.13m 72ft 14ft 7ft Note 1: Headroom is more limited for boats more than about 3.2m (10ft 6ins) beam, and especially so approaching the maximum beam. It will be necessary for such boats to proceed with extreme caution. Note 2: The channel width is restricted in some places on the canal section (Foxton to Leicester) and broad beam boats may have difficulty passing other boats. River Soar from Leicester to the River Trent Length Beam Draught Headroom 21.95m 4.27m 2.13m 72ft 14ft 7ft Note: Headroom is especially limited for boats approaching the maximum beam, and will need to proceed with extreme caution. Slough Arm Length Beam Draught Headroom 21.95m (23.16m) 4.27m (4.34m) 2.58m 72ft (76ft) 14ft (14ft 3in) 8ft 5ins Note: The channel is currently only dredged to narrow canal profile, therefore broad beam craft will have difficulty passing other craft. Wendover Arm Length Beam Draught Headroom 21.95m 2.13m 72ft 7ft Note: Wendover Arm is being restored as a broad waterway; awaiting confirmation of maximum beam. Aylesbury Arm Length Beam Draught Headroom 21.95m 2.13m 2.54m 72ft 7ft 8ft 4ins Note: Slightly wider beam may be possible; awaiting confirmation from Waterway Office. Northampton Arm Length Beam Draught Headroom 21.95m 2.13m 2.28m 72ft 7ft 8ft 5ins OXFORD CANAL Length Beam Draught Headroom 21.95m 2.13m 2.07m 72ft 7ft 6ft 9ins Note: Occasionally craft of 2.13m (7ft) beam may experience difficulty in Marston Doles Top, Claydon Middle and Shut Bridge Locks. These problems are being rectified as time and finance permit. Pinch point data from CRT Lock 82 Rickmansworth to Lock 82 Rickmansworth Brentford - Camp Hill tradtionally at 72' length 7' width. 14' width to Berkamsted. Measurements show Berkhamsted 4.27 24.1 2.28 1.23 longer craft possible Lock 58 Berkhamsted Bridge 155 Hemel Hempstead Berkhamsted to Norton Junction Tiddenfoot Narrows, Leighton Buzzard Movement of former bridge abutments restricting craft 3.78 24.1 2.28 1.23 Lock 8 Buckby Bridge 140 Berkhamsted Norton Junction to Napton Junction Braunston Cutting 4.27 24.1 2.28 1.23 Braunston Cutting Slip restricting craft works to be undertaken Jan- Mar 2010 Lock 1 Braunston Aylesbury Arm Lock 2 Marsworth 2.14 22.57 2.28 1.29 Bridge 13 GRAND UNION Northampton Arm Lock 8 2.14 22.57 2.18 1.23 Bulls Bridge to Little Venice (no locks) Black Horse Bridge 15 No Locks 4.30 2.08 Harrow Road Bridge 3 Brentford to Bulls Bridge 4.22 22.20 2.88 1.48 Western Road Bridge 201 Bulls Bridge to Stockers Lock (London boundary) 4.08 21.75 2.34 1.03 Packet Boat Lane Bridge Napton to Camp Hill Hatton Locks 3.78 21.95 1.90 1.76 Bridge 23 Bridge 59 Norton Junction to Foxton Lock 15 Foxton 2.14 21.96 2.52 1.17 GRAND UNION - LEICESTER LINE Lock 16 Foxton Foxton to Leicester Lock 40, St Mary's Mill 4.27 21.96 2.13 1.35 Market Harborough Arm General limit 3.66 21.96 2.28 1.23 Braunston Junction to Bridge 9 General limit 2.14 21.35 1.83 1.5 Lock 7 Hillmorton Napton Junction to Oxford Lock 16 Napton 2.09 21.96 1.98 1.23 Bridge 131a due for dismantle in 2009 Lock 9 Napton OXFORD CANAL Bridge 131a, on summit Braunston Junction to Hawksbury Hawkesbury Lock Junction 2.13 21.80 2.07 1.40 Bridge 1 PINCH POINT SURVEY Pinch Point Data Structure data 1 Canal Name: 2 Structure Location: 3 Structure Type: Bridge Lock Winding hole? Aqueduct Tunnel Toll stops Insert more Misc. types? Conditions on day of survey 4 What was the Water Level on Day of Survey? (tick as appropriate) Normal water level Above assumed normal water level Below assumed normal water level 5 If known, please note the water level (please state dimensions used Imperial/metric) _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ Your Boat dimension 6 Boat type? Need some advice for tick boxes to insert Narrow Beam Broad Beam Fibre glass etc cruiser 7 Do we need to ask about hull construction/type? Semi-v Flat etc? 8 Boat Draught: 9 Boat Beam: 10 Cabin height: 11 Were fenders deployed? YES / NO Please state number and size? Is this appropriate? 12 Were obstructions present on cabin roof? YES / NO Please give description ………………………………………………………………………………………. Pinch Point Dimensions Did your boat require assistance to free from pinch point? Please Fill out the following relevant section for your pinch point 13 Lock Dimensions (Please see diagram/Appendix? for details required for measuring this structure) It may be best to provide a diagram that they can write directly onto? Lock Top Lock Length (cill to cill)?? Width: ……………………… ……………………….. Lock Btm Anything else? width ……………………… ………………………… 14 Bridge Dimensions (Please see diagram/Appendix? for details required for measuring this structure) Bridge width Air draught ……………………… ……………………….. ? ? ……………………… ………………………… 15 Comments (Please insert any comments you may feel are relevant to this structure) Insert Appendix A Pinch Point Diagram - Lock Chamber (Draught and beam) Insert Appendix B Pinch Point Diagram – Bridge Hole (Air draught) .