the 'explorer' charts
are the bible for the bahamas, but for the abacos i give a very slight edge to steve dodges 'cruising guide to the abacos'. it shows every good anchorage and entrance to harbors in the abacos in some detail.
the entrance to black sound on green turtle cay is clearly shown in the dodge guide, including three pictures. at low tide you can barely get five feet in to black sound. if you go in there you can anchor
or take a mooring
ball for $10 a day at black sound marina. from there just dinghy
ashore and walk over to the customs house, about a ten minute walk. anybody you see will tell you where it is. DO NOT take the detour to pineapples bar; save that for after you check in.
white sound is a bit larger and more 'anchor friendly' but you can't easily walk to the customs house from there. would have to dinghy back in to town or rent a golf cart.
or, like tingum said, just anchor off the settlement, dinghy in, walk to customs house. you are in an open roadstead so weather
could be a factor.
see you there in a few weeks....