APPENDIX

A - Drilling Rigs " They consist of " :

1. Drilling vessels: To be convoyed by SC Imposed tug. (See Art. 57, item 7)
   
2. Drilling Rigs :
   

• Self steering or nonself steering,
  
• Legs that can be lifted : No extensions under the rig's keel.
  To be assisted by Suez Canal tugs :
  One aft and another - or more - as escort. In addition, a powerful tug forward to maintain a minimum speed of 12 Km/h over the ground. The rigs must be in stable condition.
  
• Legs that cannot be lifted and a part remains under the rig’s keel :
  

Each case is to be studied separately to decide whether or not the unit is allowed to transit the Canal.