Final answer:
The depth limits of the DP-1/2 submersible vehicle can vary, but newer research suggests it can reach up to 15 diameters deep.
Step-by-step explanation:
The DP-1/2 refers to the depth limits of a submersible vehicle. The depth limits can vary depending on the specific model and design of the vehicle.
Generally, the older 'rule of thumb' for depth limits was 5 side-to-side and 7-8 deep. However, newer research suggests that submersible vehicles can handle as much as 8 diameters side-to-side and 15 diameters deep.
For example, if the diameter of the submersible vehicle is 2 meters, it could potentially reach a depth of 30 meters.