New sea mines from the company RWM ITALIA
The division of Rhheinmetall Defense, RWM Italia, specializes in underwater weapons; at DSEI 2013, three products from this company were presented. Murena (moray eel) is a induced bottom mine that can be installed at a depth of up to 300 meters, although working depths are from 100 to 150 meters. Murena has a modular design, on the one hand it has a battery that allows the mine to be in operation for a year. A warhead weighing from 200 to 800 kg is placed in the middle, and a target detection device is installed on the other side of the mine. The latter is sensitive to acoustic, magnetic disturbances and pressure changes, although it also has optical and seismic sensors, underwater potential difference sensors to counter mine clearance by divers, and underwater robots. If Murena mines are aimed at combating submarines and surface ships, then Piovra (octopus) is a magnetic mine designed to combat surface targets. In the Piovra mine, a charge of an insensitive explosive C4 or PBXN-109 weighing 6 kg is installed; it is attached by a swimmer or diver to the ship's hull using magnets, vacuum suction cups, or anchor hooks. Up to six Piovra mines can be connected into a single explosive chain. The mechanical cocking delay guarantees a safe time for evacuation of more than 30 minutes, while the electronic timer can be used to set the detonation time within the next 48 hours.
Piovra can be programmed under water and while its buoyancy in water is a neutral operator can set it up before a combat mission. RWM Italia also introduced its DC103 Diver Scare Charge explosive device to scare swimmers and divers, as well as the DC103 Marine Sound Signal underwater alarm device.
The first device is available with two different charges - 250 or 450 grams of insensitive explosive RDW / Wax or DPX-1. The standard depth of the blast is 5 meters, although at the request of the customer different depths can be set; the affected area is over 30 meters. The underwater signaling device is used to maintain communication with submarines; a small charge of all 30 grams is installed into it, which is undermined at a depth of 10,7 meters; this device is worth the same fuse, which is installed in the "repeller" divers. All these systems are in service, although the buyers of these systems remain unknown.

DC103 Diver Scare Charge device for scaring swimmers and divers
Materials used:
Armada International
www.rheinmetall-defence.de
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