Wholesale nautical items, marine bookseller and nautical publications from Thomas Gunn Navigation Services

Chart Correction

At our head office in Aberdeen we stock the complete world folio of Admiralty BA paper charts. These are kept fully corrected in line with the Notice to Mariner information by our fully trained chart-correcting department. This ensures our stock is sold containing the latest navigational safety information.

We also receive requests from a variety of sources to audit chart folios and correct these up to date as required. This process is handled on a case by case basis and involves the following stages:

1. Chart Examination (Nominal fee applicable)

2. Report prepared and sent to client advising on outcome of investigation. Report is based on the following rules:
	New editions are supplied where the chart has been replaced, withdrawn or superseded.
	Chart marked for replacement if greater than 6 corrections are required.
	Chart marked for correction if less than 6 corrections are required.

3. Client advises on action i.e. correct folio, return charts.
	It is easy to keep charts updated. Receipt of data is automatic and records are kept of the correction status. Special reports may be printed off which meet the requirements of a port-state audit.
	Charts may be corrected while the vessel is at sea at convenient times. This avoids the rush to correct charts while the vessel is in port, before the next sailing, which can result in mistakes. 'little but often' chart correction procedures ease compliance with STCW requirements.

4. Saves manpower
	The chart correction process has always been difficult but our internal chart correctors use a specially designed chart correction kit, which ensures a high standard of correction.
	The kit is supplied in a hand crafted wooden box containing some 60 individual stamps that ensure every correction is identical. We have produced and supplied over 1,000 sets so far and these are now available from our warehouse in Aberdeen.
	The kit can be purchased online from our products catalogue.

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