A General History and Collection of Voyages and Travels, Volume 11: Arranged in Systematic Order: Forming a Complete History; of the Origin and Progress of Navigation, Discovery, and; Commerce, by Sea and Land, from the Earliest Ages to the; Present TimeKerr, Robert
History
A General History and Collection of Voyages and Travels, Volume 11: Arranged in Systematic Order: Forming a Complete History; of the Origin and Progress of Navigation, Discovery, and; Commerce, by Sea and Land, from the Earliest Ages to the; Present Time
Kerr, Robert
Voyages and travels
Immediately on getting to the south of the latitude of the Rio Plata
we had soundings, which continued all along the coast of Patagonia.
These soundings, when well ascertained, being of great use in
determining the position of a ship on this coast, and as we tried them
more frequently, in greater depths, and with more attention, than I
believe had ever been done before, I shall recite our observations
on this subject as succinctly as I can. In lat. 36° 52' S. we had 60
fathoms on a bottom of fine black and grey sand: From thence to 39°
55' S. we varied our depths from 50 to 80 fathoms, but always with the
same bottom: Between the last-mentioned latitude and 43° 16' S. we had
only fine grey sand with the same variation of depths, except that
we once or twice lessened the water to 40 fathoms. After this we
continued in 40 fathoms for about half a degree, having a bottom of
coarse sand and broken shells, at which time we were in sight of land
at not above seven leagues distance. As we edged from the land we had
a variety of soundings; first black sand, then muddy, and soon after
rough ground with stones: But when we had increased our depth to
forty-eight fathoms, we had a muddy bottom to the lat. of 46° 10' S.
Hence drawing near the shore, we had at first thirty-six fathoms,
and still kept shoaling till we came into twelve fathoms, having
constantly small stones and pebbles at the bottom.
Part of this time we had a view of Cape Blanco, in about lat. 47°
10' S. and long. 69° W. from London.[2] Steering from hence S. by
E. nearly, we deepened our water to fifty fathoms in a run of about
thirty leagues, without once altering the bottom; and then drawing
towards the shore, with a S.W. course, varying rather westward, we had
constantly a sandy bottom till we came to thirty fathoms, when we had
again a sight of land in about lat. 48° 31' S. We made this land on
the 17th February, and came to anchor at five that afternoon in lat.
48° 58' S. with the same soundings as before; the southermost land
then in view bearing S.S.W. the northermost N.E. a small island N.W.
and the westermost hummock W.S.W. At this anchorage we found the tide
to set S. by W.
[Footnote 2: Cape Blanco is in lat 47° 20' S. long. 64° 30' W. from
Greenwich. At this place, instead of a description of Cape Blanco, the
original gives two views of the coast in different directions, as seen
from sea; here omitted for reasons already assigned.--E.]
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