While departing Wellington and approaching Picton, WestESIM users will experience robust signal strength, ideal for last-minute emails or streaming. However, as the ferry traverses the open waters of the Cook Strait and navigates the intricate Marlborough Sounds, expect intermittent coverage. This is typical for maritime routes, but our premium network aims to maximize connectivity wherever feasible, ensuring you're back online swiftly upon reaching port.
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How reliable is WestESIM connectivity on the Cook Strait Ferry in New Zealand?
Updated April 22, 2026
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