Looking at that card...
COMP is Computer. As in you logged it on the computer
The OWx is "OWN" as in Owner has the information. Same as Computer above. Just whoever was filling out the cards has there own way of doing it.
Considering the stack of these cards they are filling out on top of everything else they are doing, they are taking a few shortcuts. You have the information yourself on your own computer. They don't need to run around and look at everyone's computer to get exactly what it says. For example you did a generic 30 foot dive, but you only went 28 feet, or maybe you went 32 feet. It is a lot of work to get everyone's computer and that depth and time. Shortcut to tell you to look at the log on your own computer.