Complex sentence: The main navigation channel is dredged to 14.5 metres below chart datum, with a maximum depth of 15 metres alongside the quay, Felixstowe boasts deep-water able to accommodate the world's latest generation of deep-draughted post-Panamax vessels.
Split into simpler sentences: The main navigation channel is dredged to 14.5 metres below chart datum, with a maximum depth of 15 metres alongside the quay. This allows Felixstowe to accommodate the world's latest generation of deep-draughted post-Panamax vessels.