We designed and built our first drilling jack-up in 1959, it was named the “Seashell”.
In 1977 we started the development of the successful CJ series of jack-up drilling units.
CJ series
The present series ranges from the CJ40 up to the CJ70. In the late 1990’s we added the patented X-Y cantilever system to enhance drilling efficiency.
To date, over 20 units are operating or under construction.

|
Class |
CJ40 |
CJ46 |
CJ50 |
CJ62 |
CJ70 |
|
Number |
- |
10 |
6 |
2 |
3 |
|
Water depth |
250 ft |
350 ft |
400 ft |
400 ft |
450 ft |
|
Area |
Moderate environment |
Moderate environment |
Moderate environment |
Harsh environment |
Harsh environment |
|
Variable load |
4,000 t |
4,500 t |
4,500 t |
5,000 t |
8,500 t |


