| IP67 | The first digit, 6, indicates a dust-tight enclosure. The second digit, 7, indicates protection against temporary immersion under the rating’s test conditions. | Standard IPX7 testing uses immersion in fresh water to a depth of 1 metre for 30 minutes. | May suit brief, accidental immersion, but this rating does not establish protection for deeper or longer submersion. | Check whether the rating applies to the complete assembled drone, including battery compartment, covers, and seals. |
| IP68 | The first digit, 6, indicates a dust-tight enclosure. The second digit, 8, indicates immersion protection under conditions agreed for the equipment. | Depth and duration are specified by the manufacturer; there is no single universal IP68 depth or time. | Can be appropriate for planned immersion only when the stated limits cover the intended depth, duration, and operating conditions. | Look for the exact tested depth, maximum duration, water conditions, and any required setup or maintenance instructions. |
| IPX6 | The “X” means no dust-protection rating is stated. The second digit, 6, indicates protection against powerful water jets under test conditions. | IPX6 is a water-jet test, not an immersion rating. | May be relevant for exposure to forceful splashes or jets, but it does not show that a drone can be submerged. | Do not treat a water-jet rating as proof of immersion protection; check for a separate immersion rating. |
| IPX8 | The “X” means no dust-protection rating is stated. The second digit, 8, indicates immersion protection under manufacturer-specified conditions. | The manufacturer specifies the depth and duration; the exact limits can differ between products. | Provides immersion information, but by itself does not confirm dust protection or suitability for every aquatic environment. | Confirm both the immersion limits and whether a separate dust rating is provided. |
| Salt water and contaminated water | Water-resistance ratings describe performance under defined test conditions; they do not automatically establish resistance to salt, chemicals, or debris. | Do not assume the stated immersion limits apply to seawater, chlorinated water, or muddy water unless the manufacturer says so. | Salt and contaminants can increase corrosion or interfere with seals, connectors, and moving parts. | Check the care instructions, permitted water types, and whether rinsing and drying are required after use. |
| Whole-system protection | A rating may apply only to specified equipment and configurations; accessories and replacement parts may have different protection levels. | Use the stated limits only for the tested configuration and conditions. | A vulnerable battery door, charging port, payload, or damaged seal can compromise practical water protection. | Check which components are covered, whether the battery must be installed, and how wear or repairs affect the rating. |
| Key takeaway | Choose a drone based on the specific water exposure you expect. For IP68, compare the manufacturer-stated immersion depth and duration rather than assuming one standard limit. An IP rating is not a guarantee against damage in every real-world condition. |