This tribe occupied the Isle of Wight and may have controlled maritime traffic in the Solent. Only one of the Vectuarii rulers, "Crab", issued coins; though very few examples are known. Crab’s coins closely resemble those of Epaticcus (c. AD 35–42) and his nephew Caratacos (c. AD 42– 43), so he probably reigned immediately before the Roman invasion of AD 43 and may have been deposed by Vespasianus. Crab’s coins have traditionally been ascribed to the Durotriges, but the Isle of Wight now seems more likely (Chris Rudd).
Other Refs: The maritime role of the island of Vectis in the British pre-Roman Iron Age, Trott & Tomalin
Coin News article by Chris Rudd on an Isle of Wight coin hoard.