Leisure or security
For safety, for maintenance, or simply to admire the ocean floor, you may have to dive under the hull of your boat. A piece caught in the propeller? A net wrapped around the keel? A hull cleaning? Reefs to explore? Fish to catch? There are many reasons why you may need to go and inspect the living works. Don't forget to bring a good wetsuit depending on the water temperature and the duration of your immersion. In water, the body cools down 25 times faster than in air.
If you have the possibility, stop at the port or at the anchorage, otherwise lower the sails and put on the cape in case of a security operation.
Now, you will have to dive and breathe underwater as long as necessary. There are several solutions to avoid having to come back to the surface regularly (apnea). Don't forget your mask or goggles, which are essential for seeing in salt water. You can also equip yourself with a lead belt to help you reach the depths.
The hookah

It is an electric compressor which can be connected directly to the battery of your boat. It sends air to the diver through a hose and a regulator. Depending on the length of the hose, you can go deeper or shallower in the water, to check your anchor for example. The duration of the dive is unlimited since it uses the ambient air, provided that you have batteries to power it.
Price : 1 149 euros at Croix du Sud Marine
Mini Dive

It is a mini scuba tank equipped with a regulator and attached to your body via a harness. This very light system (2.5 kg) allows you to have your hands free and to dive to a depth of 3 m for the uninitiated or to a maximum of 50 m for the experienced. The autonomy is from 10 to 20 minutes depending on the model and the air refill is simple thanks to the mini compressor included.
Price : from 549 euros
Underwater breathing kit

The underwater breathing kit allows you to dive autonomously for a short period of time and to a depth of about 10 m. It is attached to the back via a harness and is equipped with a breathing regulator and a pressure gauge. You will be able to dive between 5 and 20 minutes depending on the depth. Once you have used up all the air in your 2-liter tank, you will have to go to a diving center to refill it.
Price: 579 euros at Beuchat
Seagow diving system

This diving system allows you to breathe freely underwater for 10 minutes at a depth of up to 3 m via a regulator. It is worn on the stomach, slipped into a belt. To recharge your tank, several solutions are available: manual pump, Seagow compressor or 12V.
Price: Starting at 509.99 euros.