RedactedNarrative: Based on all the facts presented in the investigation it was determined that v1 was traveling behind v2, both traveling south in naples bay just east of 1201 galleon dr. In the marked channel.  The operator of v2 stated he slowed down due to an approaching boat wake.  V1 failed to slow down in time or provide enough distance to avoid a collision and struck v2 in the port outboard engine.  V1 sustained minor vertical scratch marks underneath the front section of the hull consistent with the impact marks on the port engine of v2.  V2 sustained major damage to the port outboard engine(inoperable).