A luxury 120-foot yacht believed to belong to singer Marc Anthony has gone up in flames in a Miami dock.

It took 45 firefighters nearly two-hours to extinguish the blaze, leaving the vessel partially sunk in Biscayne Bay.

The boat was docked off MacArthur Causeway at the Island Gardens Marina when it caught fire on Wednesday night.

Six or seven crew members were evacuated, according to local reports.

Crews used fireboats to douse the blaze, which could be seen from as far away as downtown Miami according to Miami Fire Rescue Captain Ignatius Carroll.

The damage caused the boat to gradually capsize, with footage from WSVN 7 News showing at least a third of the yacht submerged during the operation.

Ata Bayrakrtar, a family member of the Island Gardens Marina's owner, told the channel that the situation was bad for everyone.

Bayrakrtar said: "It's a sad day. For us, as the marina and for the boat. Firstly, it's important for people's lives, but obviously then for the boat."

The yacht called Andiamo (Italian for "here we go") is understood to be unsalvageable.

It had five cabins and slept 12 people according to TMZ, who valued it at around $7m (£5.4m).

It apparently boasted features including a BBQ, satellite TV, Wi-Fi, a Jacuzzi and docking stations for multiple jet skis.

A photo posted on Twitter by Anthony last year shows him relaxing in the yacht's Jacuzzi with friends, with the nightlights of Miami in the background.

Jennifer Lopez's ex-husband is said to have put the yacht on sale earlier this year, although it is still understood to belong to him.

He has not commented on the fire.

No injuries or damage to other boats in the dock have been reported.

It is not yet known what caused the blaze.

skynews