The MAIB has despatched an ROV team aboard the Northern Lighthouse Board vessel Pharos in a bid to determine the cause of the tragedy.
A spokesman said: “Inspectors from the MAIB will be taking advantage of a forecast lull in the weather on Sunday and Monday to conduct a ROV survey of the wreck.
“The survey will be conducted using an ROV operated by salvage experts from the MoD’s Salvage and Marine Operations Project Team.”
“The