RedactedNarrative: Two vessels collided.  Officer determined both operators failed to maintain a proper lookout.  Navigation at night in Boston Harbor can be difficult due to large back drop of lights which can make it difficult to distinguish vessel navigation lights from street and traffic lights which occurred in this case.  10/15/14  Officer estimates vessel #2 had about $2,000 in damage.  Owner of this vessel was very uncooperative and did not return numerous phone calls.