For emergencies on Lough Neagh and it’s tributary rivers call 999 and ask for the Coastguard.

Callout 602

LNR were paged by Coastguard at 13:36 after receiving a Mayday call on their Black Mountain aerial site followed up with a DSC (Digital selective calling) alert. No position was given by the vessel in either call.
The aerial site covers a large area including Lough Neagh so with no position given the LNR Lifeboats and crew on shore began a search of the entire Lough.
The search was called off when the vessel was later able to report his position as being in Portavogie Harbour on the Irish Sea.
Lifeboats back at base at 14:34.