The multi-purpose ship Island Dolphin is sailing from Europe via the Suez Canal on her Company’s Indian Ocean Service. Her port rotation as shown on her published schedule is : Southampton (STN), Colombo (Sri Lanka – CMB). Port Louis (Mauritius – PTL) Mombasa (Kenya – MOM), and returning to Southampton via Suez.

Some facts about the ship and her voyage :

• Five hatches, each served by a 25-ton crane, except number 3 hatch which has two 30-ton cranes which can work in tandem.
• Numbers 1, 2, 3 and 4 hatches have a tweendeck and lower hold
• Number 5 hatch is a cellular container hatch with a capacity for 240 40-foot containers.
• Atop the hatch covers, she has the following container capacity
• Number 1 hatch : 24 teu
• Number 2 hatch : 50 teu
• Number 3 hatch : 50 teu
• Number 4 hatch : 50 teu
• Number 5 hatch : 50 teu, all of which have plugs for integral containers
• In Colombo, cargo is handled at the following rates :
• Containers: 10 per hour per hatch
• Break-bulk cargo: 120 tons per hour per hatch
• Bulk cargo: 200 tons per hour per hatch
• Heavy lifts (Any single item over 20 tons or any vehicle): 4 per hour

Note:

• CMB EX STN means COLOMBO FROM SOUTHAMPTON
•  MOM EX STN means MOMBASA FROM SOUTHAMPTON
• PTL EX STN means PORT LOUIS FROM SOUTHAMPTON

• LH means LOWER HOLD
• TD means TWEENDECK
• SQU means HATCH SQUARE

1. Refer to the cargo handling rate given above. Now list the cargo from each hold to be discharged in Colombo. How many hours will it take to discharge the cargo in Colombo? (NB: Be careful & remember that hatches can be worked simultaneously.)
2. In Colombo, she will load 15   40-foot containers of cotton, tea and rubber latex for Southampton. Where will you stow them?            
3. In Port Louis, she will load 12 integral containers loaded with pineapples for Southampton. Where would you stow them?
4. In Mombasa, she will load a 38-ton yacht for Southampton. Where will you stow it?
5. Give a reason for your answer to Question 4.
6. On leaving Southampton, was there a case of overstowage on the ship? (YES or NO)
7. Is she a geared vessel?   (YES or NO)
8. Is she a liner or a trampship?                                                           
9. If her agent in Colombo manages to secure a consignment of 145 40-foot containers for Port Louis, will the ship be able to carry them? (YES or NO)
10. How many containers are being carried from Southampton to Port Louis?
11. How many tons of cargo will be discharged at Mombasa?