Moisture Control in Subsea Housings

Please register or login

Welcome to ScubaBoard, the world's largest scuba diving community. Registration is not required to read the forums, but we encourage you to join. Joining has its benefits and enables you to participate in the discussions.

Benefits of registering include

  • Ability to post and comment on topics and discussions.
  • A Free photo gallery to share your dive photos with the world.
  • You can make this box go away

Joining is quick and easy. Log in or Register now!

Akimbo

Just a diver
Staff member
ScubaBoard Supporter
Messages
13,631
Reaction score
13,093
Location
Mendocino, CA USA
Ocean News & Technology has a good article on moisture control in underwater housings. Although the publication primarily serves the commercial and scientific offshore communities; the information is applicable to all one-atmosphere containers including camera housings, lights, DPVs, and instrument housings used in recreational and technical diving.

Ocean News & Technology - Moisture Control In Subsea Housings
 
Last edited:
So, for us with regular recreational dive cameras, we are screwed. Wait 2 hours, or deal with moisture.

Not at all. See "Dry Air Exchange" in the article. Compressed air off a Scuba compressor is nearly as dry as commercial Nitrogen and always a great deal drier than ambient atmosphere. I use an air nozzle that snaps into my BC quick disconnect if one isn't available on the boat's camera table. I shoot air into the housing as I close the back, which displaces the great majority of moisture-laden air from the housing. I never had a fogging problem using this method.

Many newer camera housings also have vacuum ports.
 
https://www.shearwater.com/products/perdix-ai/

Back
Top Bottom