| depend on the season | 0.31 |
| change on any one cruise | 0.28 |
| depend on guest prefere… | 0.28 |
| measure temperature | 0.28 |
| measure ocean currents | 0.28 |
| measure current | 0.25 |
| float to the surface | 0.25 |
| make for easier location | 0.16 |
| make for safer diving | 0.16 |
| water | 0.51 |
| electricity | 0.44 |