Evidence respecting the amount of alcohol or drug in the blood or urine of an operator of a vessel involved in an accident who has suffered or allegedly suffered physical injury in such accident, which evidence is derived from a chemical analysis of a blood or urine sample taken from such person at the scene of the accident, while en route to a hospital or at a hospital after such accident, shall be competent evidence to establish probable cause for the arrest by warrant of such person for a violation of section 15-132a, 15-133, 15-140l, or 15-140n and shall be admissible and competent in any subsequent prosecution thereof if: (1) The blood or urine sample was taken in the regular course of business of the hospital for the diagnosis and treatment of such injury; (2) the blood sample was taken by a person licensed to practice medicine in this state, a qualified laboratory technician, an emergency technician II or a registered nurse; (3) a police officer has demonstrated to the satisfaction of a judge of the Superior Court that such officer has reason to believe that such person was operating a vessel while under the influence of intoxicating liquor or drug, or both, and that the chemical analysis of such blood or urine sample constitutes evidence of the commission of the offense of operating a vessel upon the waters of this state while under the influence of intoxicating liquor or drug, or both, in violation of section 15-132a, 15-133, 15-140l, or 15-140n; and (4) such judge has issued a search warrant in accordance with section 54-33a authorizing the seizure of the chemical analysis of such blood or urine sample.