Project Profile – Rio Tinto Oita – Seaready Maritime Maintenance Solutions

Project Profile | Rio Tinto Oita

CLIENT
Rio Tinto

VESSEL
Pilbara Iron Co – Oita

PROJECT OBJECTIVE
Delivering major survey compliance and enhancing fleet performance through integrated marine maintenance.

PROJECT STATUS
Complete – June 2025

About the Project

SeaReady was engaged by Rio Tinto to complete a comprehensive dry docking and refit of Oita, a 33-metre ASD tug operating in Dampier as part of the Rio Tinto towage and line boat fleet. Built in 2010, Oita is a Robert Allan-designed RAmpart 32 vessel powered by twin Niigata main engines and capable of delivering 65 tonnes of bollard pull.

The project focused on achieving Oita‘s 15-year class survey while extending vessel longevity, improving operational efficiency, and optimising hull and engine performance. SeaReady was selected for its proven capability, strong project management, and long-standing relationship with the Rio Tinto fleet.

Project Details

Scope of Works

Hull & Structural

Removal and refit of fenders
Full surface preservation

Machinery & Propulsion

Overhaul of Niigata ZP41 azimuth thrusters
Removal of port and starboard forward winches to replace main shaft bearings

Tank & Void Maintenance

Cleaned fresh water ballast and domestic tanks
Replaced AFFF firefighting foam
Calibrated and tested tank sensors

Hydraulics & Piping

Overhauled hydraulic motors on anchor and chain systems
Removed and replaced 16 vessel valves
Opened and ultrasonically cleaned coolers

Dry Docking & General Services

Supplied crane services, elevated work platforms, forklifts, and cherry pickers
Supplied and installed vessel signage
Provided emergency response team (ERT) services for confined space works

Electrical Systems

Completed full electrical survey in line with LRS class requirements
Overhauled AC generators
Conducted megger testing of all electric motors
Inspected main mast navigation lighting for extended service

Supplementary Works

Removed and replaced wheelhouse windows
Cropped and replaced starboard main engine exhaust hanger mounts

Challenges and Our Solutions

Challenge

Contractor Coordination

AFFF Disposal Compliance

SeaReady’s Response

Developed a unified project schedule integrating all contractor timelines and dependencies. Daily site meetings ensured sequencing alignment and proactive issue resolution.

Engaged certified waste disposal providers. Implemented safe storage and handling protocols. Maintained full documentation and compliance reporting.

Project Outcomes

All systems met survey requirements and compliance benchmarks
High standards achieved in electrical and mechanical works
Safe, controlled execution supported by effective isolation procedures
On-site efficiency enhanced through proactive issue resolution
Positive feedback from client on support, quality, and safety performance

Value Delivered

SeaReady’s integrated delivery and project management model ensured seamless coordination across multiple trades and services. With a single point of contact, clear communication, and a commitment to safety and compliance, the project was delivered on time and to specification, reinforcing our trusted partnership with Rio Tinto.