RedactedNarrative: On 1/2/18 a 31’ foot vessel (vessel 1) was moored.  The owner of vessel had started one of the two engines and when trying to start the second engine vessel 1 exploded for unknown reasons. The explosion caused the vessel to catch fire which then spread to vessel 4 which was stored on land nearby.  The flames had also caused some damage to two other vessels moored nearby, a 41 foot (vessel 2) and a 39 foot (vessel 3)