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Integrated Cable Ferry Project Route 21 : Buckley Bay ~ Denman Island Community Presentation 8 th August 2013.

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Presentation on theme: "Integrated Cable Ferry Project Route 21 : Buckley Bay ~ Denman Island Community Presentation 8 th August 2013."— Presentation transcript:

1 Integrated Cable Ferry Project Route 21 : Buckley Bay ~ Denman Island Community Presentation 8 th August 2013

2 2 Our Commitment Our commitment remains the same: Delivery of a safe, reliable and efficient ferry service

3 3 Update UPDATE ON KEY CONCERNS : Wind conditions Cable Design and Contingency Plan Loading and Unloading Vessel Economics and Business Case Experimental technology Service Availability

4 4 Wind Baynes Sound Wind Conditions BC Ferries has taken into account the actual wind speeds of Baynes Sound Thorough tank simulations and detailed analyses of the cable ferry performance have been conducted The Statement of Requirements contains this data as design criteria The cable ferry will be designed to deliver the same levels of operational availability as the Quinitsa

5 5 Cable Cable Design and Contingency Plan The cables will be inspected regularly and the main drive cable will be changed annually Cable design has been scrutinized by multiple external certified Professional Engineers Professional Engineers have signed off on the analysis and design. In unlikely event of a cable failure a spare will be swapped out utilizing the shore side equipment that will be available locally Cables are designed to be swapped out overnight with no disruption to the service schedule

6 6 Loading and Unloading Terminal and Vessel Loading and Unloading Ramp and superstructure design allow for safe and efficient loading and unloading procedures for oversized vehicles Double laned ramps at both terminals Designated passenger loading lane that is separate to vehicle ramps Staging, loading and unloading should be more efficient and safer than current practice

7 7 Business Case Significant savings include a projected 50-60% reduction in fuel consumption as well as a crew reduction of 3 The simpler vessel will require less repair & maintenance The total forecasted operating cost savings of the Cable Ferry versus the existing conventional service is $80 million over 40 years. This equates to a more favourable net present value (NPV) in todays dollars of $19 Million.

8 8 Detailed Design Cable ferries are a proven technology. There are approximately 65 cable ferries in operation in Canada alone. BC Ferries has approached this project in a very detailed fashion doing considerable analysis and testing prior to proceeding with detailed design There have been several highly qualified companies involved in this overall project.

9 9 Detailed Design The following companies have been involved in the design, analysis and studies of this project: KPFF: Firm of 800 professionals. Note: Among the largest civil and structural engineering firms on the west coat. McElhanney Consulting Services: Firm of 400 Engineers, planners & surveyors Elliott Bay Design Group: Firm of 48 Engineers, designers and support staff EYE: Firm of 9 Engineers and technologists Golder Associates: Firm of 3957 professionals Glosten Associates: Staff of 69 with 60 Engineers, Technicians and Naval Architects PBA: Firm of 10 people with 5 Engineers Ryzuk: Firm of 20 people with 11 Engineers and Geologists Thurber: Firm of 300 people with 100 Engineers and technologists DSA: Firm of 6 people with 5 Engineers Archipelago Marine Research: Firm of 175 professionals Oceanic Consulting Corporation: Firm of 35 professionals including Engineers and Naval Architects Cascadia Research: 19 biologists and research associates Rodden Engineering: staff of one engineer

10 10 Reliability and Availability Technical Statement of Requirements (TSOR) and Statement of Requirements (SOR) Key elements are defined in both the TSOR and SOR that form the basis of the overall design such that the cable ferry will be built to meet the current operational availability criteria that the Quinitsa currently delivers. The TSOR and SOR are available for those who are interested on our website under the Denman Hornby FAC section in the public consultation category

11 11 Technical Analysis IssueBCF Project TeamCritics Modelled the equations of motion governing the cable ferry system YesNo modelling Model used to represent cable ferry system behaviour Time domain computer simulation, with elements validated by physical model tests in a wind tunnel and wave tests in a hydrodynamic model basin Static weight on butcher twine supported on a frame on front of tractor Towing calculation, using large offshore structure as a reference Representation of response forces Time dependent, considering added mass and damping of the ferry and cable in water, stiffness factors accounting for pre-tension in the cable, dynamic characteristics of the ferry and cable Not Defined Representation of Applied Forces Incorporated wind/waves/tidal current effects. Wind speeds taken from statistical modelling. Wind and wave forces represented as time varying loads (gusts as well as sustained speed). Wind from anecdotal sources, initially estimated from postcard, later by empirical equation Treatment of cable loadsCable geometry correctly modelled as a catenary, with pre-tension Experiments represent cable as a taut line, butcher twine mechanical properties assumed same as steel cable. Examples reference cables in air (whistler- blackcomb) Sizing of cablesIntact and damage cable configurations analysed for maximum loads under extreme conditions; scaled by appropriate safety factor from international recognized standard (ABS/API) No clear methology Treatment of Environmental Data Dedicated short term collection in Baynes Sound correlated with long term data sets available from local weather stations. Extreme values calculated for 1 year, 50 year, 100 year return period. Wave data correlated with wind data to develop local wave conditions Anecdotal references; Building code using Sisters Island references

12 12 Project Positives The following is a list of the many improvements that this project should bring over the current service Ship should only come out of service once every 10 years with a much reduced maintenance period Modern fire suppression technology (Hi-Fog and remote monitors) Two lane off loading with future two lane loading possibilities Faster loading and unloading for vehicles and foot passengers Gated pet area on board Covered and uncovered outside seating Greater Handicap accessibility Modern marine ramps and pontoons Simple and efficient equipment Reduced maintenance requirements Expanded Denman West ~ more efficient, parking and proper traffic lane for drop off

13 13 Questions and Consultation Welcome any Questions Prepared several different storyboards representing the proposed layout of the terminals and cable ferry. We are requesting your feedback on the design and layout.


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