May 22 (Proteus accident)

The May 22 accident in the Mariana Trench destroyed the Proteus and left four victims’ families behind. Its significance extends beyond the submersible’s loss: Terry Tanaka-Taylor’s proposed account treated the disaster as a piloting error, while sonar records placed four unidentified objects in the area shortly before the hull failed, leaving a consequential gap between the official explanation and the evidence on record.

The proposed account

Terry rereads a report and technical data that she is considering emailing to the director of JAMSTEC. The report, identified as file MT-052201-023, presents itself as a review of the accident’s pertinent evidence. It states that no other vessels or predatory life-forms were involved and says that sonargrams from both the Benthos and its surface vessel, Goliath, showed nothing unusual before the Proteus lost hull integrity.

The report offers a specific alternative cause, but marks it as an evaluation rather than a certainty: piloting error, most likely when the Proteus’s starboard bow plane struck a black smoker. It points to enclosed sonar records covering 10:34:17 through 10:56:04 and photographs of the debris field. The distinction matters: the document advances a probable mechanical explanation, not a witnessed account of the collision.

The sonar discrepancy

A separate detail unsettles the report’s assurance that no predatory life-forms were involved. Four objects had appeared momentarily on the Benthos’s sonar records seven minutes before the Proteus went down. Terry remembers that Jonas Taylor had told her Megalodons did not hunt in packs. The sonar return does not identify the objects as Megalodons, but its timing and number make it difficult to treat the records as wholly uneventful.

The report and the remembered sonar trace therefore preserve competing readings of the same disaster. One documents an apparently clear approach to the moment of hull failure and attributes the loss to a likely collision; the other registers four unexplained objects close to the sinking. The evidence provided does not establish what those objects were or what caused the Proteus to fail, but it makes the report’s categorical exclusion of predatory life-forms a significant point of tension.

Institutional consequences

The draft states that Geo-Tech Industries has begun restitution for the four victims’ surviving families. At the same time, it asks that deployment of the UNIS array be allowed to continue and says the Tanaka Institute will consider the matter closed unless further information is requested. Compensation, continued work, and closure thus appear together in the proposed account: the deaths are acknowledged, while the report seeks to contain the disaster’s institutional consequences.

Terry’s uncertainty about whether to email the document gives that account an unresolved frame. The report is prepared for an outside scientific authority, yet the sonar discrepancy remains part of the evidence she is weighing. The accident’s explanation is presented as administratively ready to close, but the four returns recorded shortly before the sinking leave its central cause unsettled.