Jun 25, 1793 Home Providence Log Jun 27, 1793
Revised Aug 28 2021
1 pm: Fresh Breezes and Squally Weather. Caught a Dolphin. Out 2nd Reef Fore and Main Top Sail.
3 pm: A strange Schooner in sight towards the other Ships
4 pm: Exercised Great Guns
5 pm: Worked the Pumps as customary. Gave leave to our Prize Schooner to depart for Providence.
7 pm: In 2nd Reefs. Very Cloudy with Thunder and Lightning
10 pm: Very unsettled and at Calms, a very rapid Current running.
1 am: Light Breezes and fair Weather
4 am: At 4 hour..50′ Saw the Coast of Florida near Grenville Inlet to the Southward, from SW½S to NW½W off shore 2 leagues nearly. Could see it no further from the Mast head than from the Deck.
8 am: Fair Weather. The Land from SW¼S to NWbW off Shore 2 or 3 leagues.
9 am: Washed & Cleaned Ship. Exercised Great Guns & Small Arms. Sailmakers repairing Sails, Carpenters Boats. Some Fish seen.
12 noon: Fine Weather. Assistant in Company. The Packet and two Guinea Men. 2 Brigs and a Schooner. A Ship in the North. No land to be seen.
From the best Maps of the Gulph and taking my departure from the Bay of Matanzes (by the valuable help
of my Time Keepers) I supposed myself on the Bahama side. It is evident however I was on the Florida
shore. This circumstance has enabled me to determine a very essential point. Indubitably the Coast of
Florida in the latitude of 26°..36′ lies 1°..29′23″ Easterly of the Bay of
Matanzes (The Time Keeper are not to be doubted) whereas the Map of Sayer and Bennet has it only 35 Miles,
a difference of 0°..54′23″ too far to the West. This very serious Error is the Cause of
the loss of many Ships, as they consider the Gulph more open when they take their departure from the Pan
of Matanzies than it really is to them. The old Rule is to have the Pan to bear SSW and Steer NNE which
is NNE¾E, unless they have a Current setting to the Eastward they never can get this length with
the common Easterly Wind, & I therefore infer when they take the departure just recited, that the
certainty I may say is, the current sets to the NE, and of course it must increase their Easting as well
as Northing. Notwithstanding this the Ships commonly fall in with the Florida Shore, which gives a just
inference and concurrent testimony with the Time Keepers, that the Coast of Florida is laid much too far
to the West in its relative possition to the Bay of Matanzes. By a fair and unbiassed reckoning which I
every keep, (without allowing for Currents or any such abominable and vague Systems, but as far as
imaginary ideas of them to counteract danger) I find I make 59 Miles of Easting from the Bay of Matanzes
to the Land in 26°..36′ North. If to this we allow only the current of Yesterday it gives
1°..19′ 
Longitude between the two places, which is nearly 10
Miles less than the difference of Longitude before stated.
Jun 25, 1793 Home Providence Log Jun 27, 1793