GF
The absolute minimum width for a 747-400 180deg turn is 46.6metres (153 ft).
[source: B747 Flight Ops Manual]
Our guidance is that on a runway of 60 metres width is that 'extreme caution' should be exercised.
As you can see, a large modern aircraft is very, very limited at places such as Antigua - even more so than you were.
It is a place to be very wary - even in the most benign conditions. In adverse conditions, it is even more challenging due to the light nosewheel loading on the 747, and apparently the 777 is even worse.
It is sad that some other people on this thread seem to equate it to being a slur on the island, and to cast aspersions on piloting ability and to suggest that because it doesn't have an ILS .......
The reality is that:
(1) ANU doesn't have the weather to require an ILS as a rule (even if the terrain doesn't preclude it)
(2) Any pilot in recency can fly a visual/NDB/VOR approach
(3) The completion of a parallel taxiway would greatly assist everyone (and stop events such as the BA 777 that closed the only runway for about 2 days some years ago -- didn't the tug have to be brought in by sea?) in the aviation and whole island community.