All these cargo ships that are being hijacked off the coast of Somalia have no actual weapons for various reasons, so how can they evade and defend themselves against marauding pirates?
To evade capture, captains speed up their ships or send them into spins, creating tumultuous wakes that destabilize the small, light speedboats that rush their sides. Once the pirates begin scaling the ships with ropes and hooks, crews spray fire hoses at the pirates or fire sonic cannons, a U.S. Defense Department developed non-lethal weapon carried by some ships. The weapon, also called the Long Range Acoustic Device, blasts a tight beam of painful siren-like sound on a target, causing enough pain to repel an approach.
Worst defense ever. You know who they need? One word. Aquaman.