G.R. No. L-37010 November 7, 1988
JESUS MANAHAN, petitioner, vs. PEOPLE OF THE PHILIPPINES, respondent.

FACTS

In the early morning of June 6, 1965, a collision occurred between the M/L Marli III, commanded by Captain Jose Nuñez, and the M/V Pioneer Butuan, commanded by Captain Jesus Manahan, near Talisay, Cebu. The M/L Marli III was struck on its starboard side, causing it to be swamped. Three female passengers, including Nuñez’s daughter, were thrown overboard and drowned. Both captains were charged with Multiple Homicide and Damage to Property through Reckless Imprudence. A separate administrative investigation by the Board of Marine Inquiry recommended the exoneration of both captains, finding that Nuñez acted in extremis and that Manahan committed no negligence. Despite this, the trial court convicted both of the crime through simple negligence, a decision affirmed by the Court of Appeals with modifications to the civil indemnity.

ISSUE

The core issue is whether the Court of Appeals erred in affirming the trial court’s conviction of petitioner Jesus Manahan for the crime of Multiple Homicide and Damage to Property through Simple Negligence, despite the administrative finding of exoneration by the Board of Marine Inquiry.

RULING

The Supreme Court denied the petition and affirmed the conviction. The legal logic rests on the distinct nature and purposes of administrative proceedings versus criminal prosecutions. An exoneration by an administrative body like the Board of Marine Inquiry does not operate as an acquittal in a criminal case. Administrative proceedings are primarily for determining administrative liability and ensuring maritime safety, and their findings, while persuasive, are not binding upon the courts in a criminal action where the quantum of proof is guilt beyond reasonable doubt. The trial court and the Court of Appeals, based on the evidence presented during the criminal trial, found that both captains failed to exercise the requisite diligence required of ship masters, leading to the collision. The Supreme Court upheld these factual findings, emphasizing the well-settled rule that factual determinations of the trial court, when supported by substantial evidence, are conclusive on the Supreme Court. Furthermore, the Court found no merit in Manahan’s motion for a new trial, as he failed to demonstrate that the alleged new evidence could not have been discovered and presented during trial with reasonable diligence. His reliance on the administrative exoneration was insufficient to overturn the criminal conviction based on the court’s independent assessment of the evidence.