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This proposal outlines the key engineering parameters, crew size requirements, and marine traffic considerations for the Cable Ferry Route 21 project. It includes data on wind and wave conditions, vessel design criteria, and cable design specifics. The document also discusses the impact of crew numbers on operational feasibility and financial viability, as well as the independent expert review process. Stay informed about this innovative transportation solution for Baynes Sound!
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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.