A pivotal test phase for the islands’ lifeline route
The Isles of Scilly’s next passenger ferry, Scillonian IV, has moved into the crucial sea trial stage in Vietnam, a milestone that brings the vessel closer to entering service on the Penzance–Isles of Scilly route in March 2027. Built by Piriou Vietnam, the 75‑metre ship will replace Scillonian III, which first joined the fleet in 1977 and is now sailing through its final operational season.
The new ferry forms the centrepiece of the Isles of Scilly Steamship Group’s £40 million programme to modernise passenger and freight links. The initiative is designed to make services more resilient and efficient for islanders, visitors and local businesses that depend on dependable transport for people, goods and essential supplies.
What the sea trials involve
Initial manoeuvres are taking place from the shipyard in Ho Chi Minh City, with the vessel heading down the Nhà Bè river to open water for a schedule of speed and operational tests off the Vietnamese coast. Representatives from classification society Lloyd’s Register are joining the trials alongside the steamship group’s own team, including technical superintendent Luke Parnell, engineer Jonathan Jackman and Scillonian master Joe Whetton. As well as performance runs, the programme checks critical onboard systems such as anchors and safety boats to ensure compliance with international safety standards, and begins crew familiarisation with the ship’s systems.
“The commencement of sea trials represents an important step towards bringing Scillonian IV into service next year,” said Stuart Reid, chief executive of the Isles of Scilly Steamship Group. “We’re delighted to see the project reaching this crucial phase and look forward to sharing further updates as Scillonian IV continues its journey towards serving the Isles of Scilly.”
Capacity and comfort upgrades
Scillonian IV is purpose-built for the route and will carry up to 600 passengers — a 24% uplift on the current vessel’s capacity. The ship is being fitted with roll and pitch reduction technology to improve comfort in lively seas, alongside modern propulsion designed to enhance efficiency and reduce environmental impacts. The operator also says journey times will be shortened compared with today’s service.
| Feature | Scillonian IV |
|---|---|
| Length | 75 m |
| Passenger capacity | 600 (up 24%) |
| Key systems | Roll/pitch reduction; modern propulsion |
| Planned entry into service | March 2027 |
| Route | Penzance ↔ Isles of Scilly |
Part of a wider fleet renewal
The ferry is one of two new-builds under the steamship group’s investment. Sister project Menawethan, a dedicated freight vessel also constructed by Piriou Vietnam, has already been delivered this year, reinforcing supply lines for goods and cargo to and from the islands. Together, the ships are intended to underpin a more reliable year-round service, especially during rough weather and peak summer demand.
What this means for residents and visitors
For island communities and the tourism economy, the additional seats and improved seakeeping should ease bottlenecks and reduce weather-related disruption once the vessel takes over the route. The operator has not detailed any immediate changes to existing sailings while trials, final fit-out and certification are completed overseas. After testing, Scillonian IV will undergo final works and formal approvals before a delivery voyage to the UK and commissioning ahead of its first passenger season.
- More capacity: space for 600 passengers aims to relieve peak-period pressure.
- Smoother crossings: motion-reduction systems are designed to enhance passenger comfort.
- Modern fleet: part of a £40m programme including the new freight ship Menawethan.
Next steps before service
Sea trials will verify performance and safety systems. The ship will then receive its final fit-out and certification. Delivery to the UK will follow, with entry into service planned for 2027, when it will take over from Scillonian III on the Penzance–Scilly link. The steamship group has signalled it will provide further updates as the test phase progresses.
The replacement of a vessel that has served for nearly half a century marks a significant moment for the Isles. With greater capacity and a modern design tailored to local conditions, Scillonian IV is expected to provide a more resilient connection that supports everyday life on the islands and sustains the visitor economy that so many jobs depend upon.
