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Supplemental Information. Cable Ferry – Route 21. Topics. Approval Process & Timelines Engineering Parameters Cable Design Criteria Vessel Design Crew Size ~ Minimum Safe Manning Marine Traffic (Baynes Sound) Cable Ferry Statistics Examples of Large Cable Ferries
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Supplemental Information Cable Ferry – Route 21.
Topics • Approval Process & Timelines • Engineering Parameters • Cable Design Criteria • Vessel Design • Crew Size ~ Minimum Safe Manning • Marine Traffic (Baynes Sound) • Cable Ferry Statistics • Examples of Large Cable Ferries • Home Porting ~ Emergency Support • Business Case Financials • Independent Review
Approval Process & Timelines Key Events
Engineering Parameters • Wind Data: • Based on 2008 data from Chrome Island correlated with Historical Data from Ballenas (1994-2008), wind speed/direction/duration • Use of Chrome Island site will be conservative for Baynes Sound based on observed 2008/09 data • From Report BCF-012 (Oceanic Consulting/Triton Consulting Ltd.): Chrome Island Wind Data: Where: Annual = value seen once per year 50 Year = 50 Year Return, value seen once every 50 years
Engineering Parameters • Wave Data: • Based on data collected in Baynes Sound by Wave Buoy • Data on Wave Height, Period (frequency), and direction collected from 18 November 2008 to 12 March 2009 – see time data plots from Report BCF-016 • Extrapolated to Extreme Values, correlated with measured data due to long measurement period (4 months) • Wave heights limited to short fetch in channel, no significant swell, wave periods short (< 6 seconds) Also: current due to tide noted as ~ 1 knot maximum.
Engineering Parameters • Environmental Design Criteria: • Based on the data collected in 2008-2009 extrapolated to extreme values • Cable Design: Drive and Guide Cables to be identical, designed to: • Operating Wind Speed for standard operations sized with appropriate safety margins; for fatigue and maintenance procedures • Design Extreme Wind Speed – ensure that strength is not exceed with reduced safety margins; also design of the cable braking system. • Engine Specification: One (1) primary and one (1) stand-by prime mover driving the cable system. • The transit speed in Operating (normal) conditions can be achieved with one prime mover. • For extreme conditions, two engine operations are permitted and expected.
Engineering Parameters RIDE QUALITY ISSUES
Cable Design Criteria CABLE LENGTH ISSUESNote: Actual Length = 1900m (pier to pier)
Minimum Safe Manning – Estimating Accuracy Results: 35 / 37 Submissions correct.
Predicted Crew Complement Normal Operating Procedures Emergency Operations
Marine Traffic (Baynes Sound) • Transport Canada Marine Communications & Traffic Services (MCTS) reports the following: • Baynes Sound (Sector 4 traffic management area) is not a primary passage; majority of marine traffic takes place between Hornby and Texada Island. • Most of the vessels calling in for the Baynes Sound area are: military training vessels, CCG vessels, tugs and barges, with few fishing and pleasure vessels • Peak season traffic: • 2009: June – 9 calls, July – 16 calls, August – 23 calls • 2010: June – 8 calls, July - 24 calls, August –8 calls *commercial vessels, fishing vessels over 20m and pleasure vessels over 30m
Examples of Large Cable Ferries • Connects Devon and Cornwall, UK • 73 cars • 85 meters long • 1000 meter route • High marine traffic zone Torpoint Ferry • Poole Harbour, Dorset, UK • 48 cars • 74 meters long • 1000 meter route • High marine traffic area Bramble Bush Bay Ferry
Impact of Number of Crew on Feasibility of Cable Ferry Business Case Financials • Even when crew savings are excluded, Cable Ferry is more cost effective than conventional service
Independent Expert Review • We have heard the community’s concerns regarding BC Ferries current conclusions. • BC Ferries has retained an independent expert to review all aspects of the feasibility study. • Mandate: • Review all data and information generated in the feasibility process. • Evaluate BCF’s conclusions; report any gaps in the information. • The report is due in December. • The report will be made public.