The Ann and James Ritchie II arrived on Saturday morning.
The £2.2 million Shannon lifeboat is the most advanced in the RNLI fleet.
A spokesman said it's safer and faster and designed to keep crew safer on shouts.
A formal naming ceremony and service of dedication will take place in early summer.
Fuel price hit may last into winter, says government
Further temporary speed limits on TT course
Western homes to be without water tomorrow
Co-Op ordered to hand over evidence in blind worker's tribunal
Who'll be getting meningitis vaccines?
New atlas shows dramatic fall in Island birth rate
Autocar lavishes praise on Island's roads
Super Unleaded hits almost 165p a litre