Submersible Offshore Marine Cage

Definition of Submersible Offshore Marine Cage

Submersible Offshore Marine Cage is a marine cage / floating fish cage that can be submerged and refloated back according to needs for growing fish in offshore waters.

Indonesia has a very big marine economic potential. With 17,500 islands, 95,000km shoreline, and 6,159,000 km water area, fish farming / aquaculture industry potential in Indonesia is very high. Currently, the development of fish farming / aquaculture is done on sea coast with the utilization of coastal marine only reached 1%. However, along with the growth of economic activity, the utilization of Indonesia’s marine area for fish farming / aquaculture industry will shift from coastal marine to offshore marine.

Offshore fish farming / aquaculture is very promising because Indonesia offshore marine has a much bigger area than coastal marine and less likely to collide with other marine industries such as shipping, conservation, and tourism industries. Also, offshore water has more dissolved oxygen than coastal water and has lower pollution level. However, offshore fish farming / aquaculture has other challenges that must be solved.

Fish farming / aquaculture activity in offshore waters has many challenges, such as:

  1. High wave and typhoons, where in certain seasons the wave can reach up to 10 meter high
  2. The arrival of ocean current containing high plankton count (plankton booming), which drains the oxygen in one location and causes mass fish mortality
  3. Theft of fish by irresponsible parties

These challenges often disrupt the fish farming / aquaculture activity in offshore waters, which very unfortunate considering the economic potential of fish farming in offshore waters is very big. Responding to these challenges, AquaTec launched Submersible Offshore Marine Cage, a marine cage / floating fish cage that can be submerged 5-15 meter during typhoons, and can be refloated when weather improves. The same thing can be done when ocean current containing high plankton count arrives or when farming in theft prone areas (in this case the cage can be submerged every night to prevent theft). When AquaTec Submersible Offshore Marine Cage is being submerged, the cage is safe from any kind of weather above the surface, from plankton current, or theft. Therefore, AquaTec Submersible Offshore Marine Cage is the most suitable solution to face the challenges of offshore fish farming / aquaculture in offshore waters.

Side View of AquaTec Submersible Offshore Marine Cage

Different from other submersible marine cage / floating fish cage from Europe, which still rely on the height of the sea level, the depth of submerging of AquaTec Submersible Offshore Marine Cage is based on seabed, therefore giving more accurate calculation in the process of submerging and refloating of the cage, and does not rely on the height of sea level which is constantly changing due to tidal changes and waves. The process of submerging AquaTec Submersible Offshore Marine Cage only takes about 5 minutes and can be abandoned. The way is by opening the valves that are spread over the circumference of the cage pipe and let seawater fill the cage pipe, then the cage will submerge by itself to the desired depth. Businessesmen that owns a lot of AquaTec Submersible Offshore Marine Cage do not need to worry about the submerging process when typhoons come, because he/she only needs to open the valves on each cage and leave the location to have the cage submerged by itself. AquaTec Submersible Offshore Marine Cage is the fastest submersible marine cage in the world in submerging and refloating process.

The submerging process does not require diver. When submerged, the net shape of the AquaTec Submersible Offshore Marine Cage is still maintained and fish can still live inside the cage underwater.

The refloating process of AquaTec Submersible Offshore Marine Cage is very easy, which is by pumping air back inside the cage through vale using pump. The whole refloating process of AquaTec Submersible Offshore Marine Cage only takes less than 10 minutes. The way is by finding the marking buoy attached with hoses that are connected to valves, then pumping air back inside the cage pipe until the cage emerges back on the surface. An AquaTec Pontoon with 4 compressor on it can refloat 4 AquaTec Submersible Offshore Marine Cage at the same time. The refloating process of AquaTec Submersible Offshore Marine Cage does not require diver.

The defining features of AquaTec Offshore Marine Cage are:

1. Easy and quick to assemble, can be assembled by anyone that has assembled a round marine cage

2. Inexpensive

3. Quick to submerge and refloated back, the quickest in the world today

AquaTec Submersible Offshore Marine Cage has been tested 3 times in Lampung Research Center and in Tulamben, Bali with satisfying results. All pipe connections in AquaTec Submersible Offshore Marine Cage use butt fusion extra and/or flange connection which is very strong. Valves are embedded on the pipe, therefore strong and leak proof. There are 2 alternatives of AquaTec Submersible Offshore Marine Cage available, 2 pipes type and 3 pipes type.