RedactedNarrative: Unit 1 was north bound in the ICW.  Three to four boats were drifting in front of Unit 1.  Unit 1 approached and was attempting to pass on the port.  Unit 1 accelerated and upon hitting the other vessels wakes the boat acted abruptly and hooked to the left.  The vessel sped toward the left woodline and struck a small tree on the port bow.  According to a witness and the operator, it sounds like the hydraulic power steering fluid may have been low and had air bubbles in the lines allowing the engines to shift more than normal.  One occupant suffered a concussion and the other a brain bleed.