The Experience
On the Water:
What Happens
Departure: Eastbourne Marina
Your RIB departs from Sovereign Harbour, Eastbourne's modern marina complex. The skipper meets the group on the pontoon, conducts the safety briefing, and fits life jackets before departure. The boat heads west out of the harbour entrance and turns along the coast towards Beachy Head, which comes into view within minutes of leaving the marina.
Beachy Head: Britain's Tallest Chalk Sea Cliff
Beachy Head rises 163 metres straight out of the sea — the highest chalk sea cliff in Britain. From land, you see only the top. From the water you see the full height, the striped chalk and flint geology, and the candy-striped Beachy Head lighthouse (built 1902) at the cliff base, accessible only by helicopter or boat. The scale is difficult to comprehend until you're below it.
The RIB passes close enough to see individual flint bands in the chalk — the horizontal layers of harder flint nodules that form when the chalk does not resist erosion, creating the characteristic stepped cliff profiles. Your skipper explains how the ongoing coastal erosion is measurably changing this coastline every year.
The Seven Sisters in Sequence
Continuing west, the route passes each of the Seven Sisters in order. From the sea their individual shapes are clearly distinct — the undulating white faces of each peak separated by the dry valleys (known locally as "bottoms") that run down to the cliff edge. The Cuckmere Haven beach and river mouth mark the western end of the sequence, where the chalk gives way to lower, greener slopes.
The Hidden Cove
The tour includes a stop at a small shingle beach with no land access. The RIB beaches on the shingle and passengers can step ashore for photographs and a closer look at the chalk cliff faces from their base. This is one of the most striking perspectives available anywhere on the East Sussex coast — and it requires a boat to reach.
See the cliffs from the perspective most visitors never experience.
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