
Technical Specifications
Overview
DEV Aratere is a roll-on/roll-off rail and vehicle ferry operated by KiwiRail in New Zealand. Built in 1998 for Tranz Rail and lengthened in 2011, she operated four daily crossings on the Interislander service across Cook Strait from Wellington to Picton each day (with six crossings over the December/January period). As of 2024, Aratere was New Zealand's only rail ferry. When the vessel was not available, rail freight between the North and South Islands had to be transferred to trucks, driven onto other Cook Strait ferries, and then transferred back to rail after the crossing, with associated additional time and cost. She was retired in August 2025 and sold for scrapping in India.
Intelligence
This ship has no verified emissions report. We estimate a band E from its segment, size and age (100% confidence).
Estimate, not a reported figure. Within one band 95% of the time on reported peers.
Composite Risk
Strong, corroborated adverse evidence — a detention, sanctions exposure or an AIS-gap / behavioural signal.
A coverage-weighted blend of the 3 components we could read for this hull — the weights renormalise over only the components present, so a thin read is never inflated and a hull is never credited a “safe 0” for a signal it has no row for. Higher means riskier. Derived in-house from government-open port-State-control, flag, sanctions and our own vessel data; weight it by the coverage above.
Estimated
Tanker · summer draught 5.2 m · 14.1 t per cm immersion
Estimate only — modelled from deadweight (hull geometry) using a first-principles hydrostatic model, not measured hydrostatic tables. The design draught it is anchored to is unreliable across the fleet.
declared tanker but density DWT/GT=0.31 is below the light-cargo cut 1.05 — under even a small bulker/tanker (typical >= 1.2); reads like a gas carrier or storage/FSO unit
The declared type conflicts with the class implied by the vessel’s size signals — a possible mis-declaration. Inferred via our shared size-based classifier.
Transparency
Behavioural flags raised against this vessel — each shown with the raw evidence behind it. Derived in-house from data we are entitled to publish; informational, not a determination of wrongdoing.
Declared type contradicts the size-implied class
Method: declared type vs size-implied class (DWT/GT density + beam/LOA fullness). Source: vessel_type_audit (sibling P3#3 job; shared coarse_class classifier).
Signals are a current-state view: a flag clears once the vessel stops tripping its detector. These are screening indicators, not a substitute for your own due diligence.
Commercial
Fleet Management

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