The Abaco Islands consist of Great Abaco and it's outer reef, Elbow Reef, and throughout the 18th and 19th centuries were sparsely populated.  They were economically dependent upon the trades of boat building and ship-wrecking. 

The practice of 'salvage' (or 'wracking') by ship-wreckers in the islands was a well-organized and lucrative business which accounted for the employment of up to half of all able-bodied men in the region, and over 300 vessels were licensed into the trade. The islands were on the main shipping route between the Caribbean and Florida.  All 'salvaged' cargo was considered to be 'imported' goods and was sent to Nassau for auction.  The government and its agents would take up to 50% of the value, with the remainder going to the wrackers and the ship owners.  Around the middle of the 19th century records show that up to one ship a week was wrecked on the reefs of the Abaco Islands. 

Perhaps not surprisingly, there is evidence of the wrackers deliberately setting lights to attract passing ships onto the reefs rather than away from them.  The construction of the Elbow Reef lighthouse at Hope Town in 1864 was no smooth affair with local 'wrackers' doing all they could to interrupt its construction, including sabotage, sinking construction supply barges, and withholding drinking water to construction workers, .  The site chosen for the construction of the Lighthouse was, ironically, on the exact spot which had been the most profitable for the wrackers, at the entrance to the harbour.

The other lighthouse featured on the survey is known as the 'Hole in the Wall' lighthouse on the southern tip of Great Abaco.  It was named after a hole in the wall of a rocky tidal outcropping by the sea.  Construction was completed the same year that the soundings (shown in blue) for the southern part of this survey were made by HMS Thunder between November and April 1836.

The chart makes reference to the vegetation and wildlife on the islands and, as well as including small notes as to natural navigational features such as prominent hills and trees, it shows an area frequented by flamingos and wildfowl. Land heights at various points are marked in red. Marsh Harbour, now the major ship building town and 'gateway' to the islands, shows little sign of development.

The major part of survey was undertaken by Lt & Commander William Shearburn White, assisted by Lts. Smyth & Smith utilizing HMS Sparrowhawk which was a specially built survey schooner.  That the British Navy had, by the mid 1800s, started to commission specialist survey vessels was a mark of the importance attached to this level of information gathering.