A subjective evaluation of a drinking system for saturation divers

Area of Science:

• Diving Medicine
• Human Physiology

Background:

• Long-duration dives, especially in hot water suits (HWS), can lead to significant dehydration due to sweating.
• Dehydration impairs diver alertness and judgment, posing safety risks.
• Maintaining body fluid balance is critical for underwater operations.

Purpose of the Study:

• To evaluate a novel drinking system for divers (DSFD) during extended saturation lock-out dives.
• To gather subjective feedback on the DSFD's usability and effectiveness.
• To assess body fluid loss and hydration status with the DSFD in use.

Main Methods:

• Ten divers participated in 12 saturation lock-out dives averaging 5.5 hours.
• A drinking system for divers (DSFD) with an oronasal mask and suction pipe was tested.
• Divers completed post-dive questionnaires regarding system use and hydration.

Main Results:

• Divers using the DSFD drank an average of 1.4 liters during dives, significantly reducing post-dive fluid intake.
• The DSFD was easy to operate, did not impede work, and was well-received by all divers.
• The system maintained body fluid balance, evidenced by reduced thirst after diving.

Conclusions:

• The DSFD is a practical and effective solution for maintaining diver hydration during long saturation dives.
• The system enhances diver safety and performance by mitigating dehydration.
• Subjective feedback indicates high satisfaction and usability of the DSFD.