Wednesday, 28 January 2015

Callisto – Modular Sensor Float for Deep Submerged Submarine Operations

Gabler Maschinenbau GmbH in Lübeck, Germany, is the innovator and manufacturer of the CALLISTO communications buoy system selected to equip the German Navy's Type U212A batch 2 fuel cell submarines. Hendrik Goesmann, the company's Head of Naval Sales, told NAVAL FORCES that the CALLISTO system enables submarines to communicate from a deep submerged position. This is done by releasing an optimally streamlined float from a hoistable mast, so that it ascends to the water surface on the end of a towing cable. The high-power, multi-band antenna is integrated in the float and enables the submarine to serve the following frequencies:
- HF reception and
- IFF and GPS.

CALLISTO locked in the mounting system of a communications mast aboard the Type U212A submarine U35.
(All photos: Gabler Maschinenbau GmbH)
This allows the submerged platform to be fully integrated into Network Centric Operations without the need to leave its deep submerged position. The buoyant body itself can be released and retrieved repeatedly for different operations.
CALLISTO can be integrated in different locations in the submarine: in the upper deck, in a mounting system in the sail, or as a hoistable mast. Thereby, this system is not only applicable for new-construction submarine designs, but also in case of refit/modernisation of in-service submarines.
The CALLISTO float can be equipped with an extremely wide range of different sensors. In addition to the aforementioned communications means, the float can also be fitted with options such as radar early warning device and/or optronic systems. This communications system now forms an integral part of the German Navy’s two Type U212A Batch 2 submarines. After successful integration and technical acceptance, the next step is to test CALLISTO in a series of deep water trials that will be accomplished during the first half of 2015.

CALLISTO in retracted position integrated in the sail.
Gabler Maschinenbau GmbH is the leading producer of tailor-made hoistable masts and special equipment for submarines with the goal to further improve and widen the capabilities and skills of naval submarines and their crews, with the CALLISTO system being the latest proof.


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