lines, etc.) and a special fuel bladder, which can be of either 6- or 18-gallon capacity and which feeds the engine via a flexible hose. Deflated and rolled up, the boat and all necessary equipment can easily fit into the bed of a small pickup. Most military CRRC's use a two-stroke engine with a pump-jet propulsor, which consists of a shrouded impeller. This design reduces the risk of serious injury to personnel in the water when compared to the traditional open propeller. It also reduces the risk of the propulsion system being seriously damaged by submerged objects. A specially-trained coxswain sits at the stern (rear) of the boat and controls it via the tiller arm, attached to an outboard engine. The coxswain is considered the commander of the craft and is ultimately responsible for its operation, regardless of whether a senior-ranking individual is on board. Across from him sits the assistant coxswain, who relays hand signals from other boats and aids the coxswain as required. The remaining passengers (six raiders plus the two coxswains make up a full team) normally lay on and straddle the gunwale, keeping a low silhouette to help avoid detection and leaving room on the deck for weapons, equipment and (if necessary) additional fuel bladders. Because the CRRC offers no protection to its occupants and is itself highly vulnerable to small-arms fire, operations involving it almost always take place at night and depend on the elements of stealth and surprise. To alleviate this, Zodiac introduced ArmorFlate, the world's first inflatable bulletproof system for inflatable boats, in 2002. It can be installed on the Zodiac FC470 and inflates in 40 seconds. Specifications Length 4.7 m (15'5") Width 1.9 m (6'3") Empty weight 146 kg (322 lb) Max engine weight 110 kg (243 lb) Max passengers: 10 Max payload (including fuel): 1,250 kg (2,756 lb) Max range: varies depending on fuel load and payload See also Offshore Raiding Craft References External links Zodiac Milpro Landing craft Inflatable boats Military boats Special forces Frogman operations Combat diving