Witnesses Described Flames Shooting 20 to 30 Feet in the Air and Live Ammunition Rounds Exploding. A luxury yacht carrying 1,000 rounds of ammunition and fireworks erupted in flames Wednesday night in Marina del Rey, causing explosions and a massive fire that took hours to extinguish. The yacht, which was approximately 100 feet long, eventually sank, according to the Los Angeles County Fire Department (LACoFD).