1. SS Cape May’s CAF Crane

2. Project Advisor: Dr. Han Bao Team Shannon Ershen Alonza Frazier Stanley Reese

3. Crane Problem Install a Mobile Crane onto a CAF Does not need to be attached Does need to be supported

4. Project Purpose Increase availability for missions previously out of scope Current rear positioned attached crane outdated and in poor condition, low range of operability Provides lower cost alternative to removal and replacement of current crane avoiding drydock/yards period

5. SS Cape May Background The SS Cape May is a SEABEE, or barge, type vessel. It is designed to carry loaded barges, causeways, crafts, and other oversized cargo. The cargo is floated into the sternwell and lifted by means of submersible elevator. The barges are transported longitudinally by the ship’s railed electro-hydraulic transporter system. Once in stow position the barge is set on pedestals that run the entire length of deck.

6. SS Cape May Background Originally launched the SS Almeria Lykes 1972 MARAD acquired 1986 renamed SS Cape May Loads and offloads barges carrying large/outsized cargo by submersible 2,240 ton elevator Transporters transport barges to stow position on 3 decks, each capable of lifting 1,120 tons

7. Typical Military Cargo Army and Navy watercraft Tug boats Air cushion vehicles Landing crafts Causeway sections Roll-on/Roll-off cargo (wheeled vehicles)

9. Container Adapter Frame

10. Mobile Crane: Grove RT890E

12. Selected Design

13. Design Analysis

16. Welding vs Fastening Welding Pros: Permanent (No bolts to replace) Less susceptible to Corrosion Welding Cons: Permanent Slightly costlier due to man-hours for work

17. Welding vs Fastening Fastener Pros: Removable Easier and faster to install Fastener Con: Susceptible to corrosion in crevices

18. Costs New Crane, Welded Plate: $1,260,989.08 Used Crane, Welded Plate: $610,655.74 New Crane, Bolted Plate: $1,260,717.88 Used Crane, Bolted Plate: $610,384.54 Little difference in Material Installation Cost between Welding and Fastening Maintenance Costs will increase for welding

19. Conclusions Attaching a Mobile Crane to the CAF is feasible Expensive, but would be useful and would expand the mission capabilities of the vessel Our design is simple and capable, but needs minor modification

20. Gantt Chart

21. Special Thanks Richard Mack BS, Mechanical Engineering at Virginia Tech, Engineer 4 at Newport News Shipbuilding. Rich assisted on the CAF re-design, fastener calculations. Trongnghia Huynh ODU Nastran/Patran Finite Analysis software assistance. John Spears SS Cape May’s Lead Engineer SS Cape May Crew Richard Mack BS, Mechanical Engineering at Virginia Tech, Engineer 4 at Newport News Shipbuilding. Rich assisted on the CAF re-design, fastener calculations. Trongnghia Huynh ODU Nastran/Patran Finite Analysis software assistance. John Spears SS Cape May’s Lead Engineer SS Cape May Crew

22. Questions?