Improvements in and relating to underwater excavation apparatus

摘要

There is disclosed an excavation apparatus (105) comprising a controlled flow underwater excavation apparatus. A housing (120) thereof comprises at least one inlet (125) and at least one outlet (130). The at least one inlet (125) is provided on or at a side (126) of the housing (120). A fluid flow path (5) (F) extends from the/each at least one inlet (125) to the outlet (130). The fluid flow path (F) comprises a first portion (F