The Sun.
London, England, 1803-08-03 00:00:00

NAUTICAL IMPROVEMENTS.
To SHIPOWNERS and CAPTAINS.

MESSRS. PENNECK anti DUNKIN having
obtained a Patent for Methods for improving the sail-
ing and navigatingoi Ships and Vessels, take•the liberty of
introducing to,their Notice the following Articles of their
Patent, together with the advantages connected with their
adoption.
r. A luminous Compass, which possessei these desirable
Properties : it chairs the least possible light on the Sails, and
consequently prevents the danger of being discovered by an
Enemy. Its Points and Letters are rendered, to the greatest
posaibledegree, defined and conspicuous, and its Card is ex-
hibited to meet the,eye of the Observer at any angle of ele-
.
vation. _ . _

2. An improved MiZen, - which is considerably more pow.
erful than that at present in use.
3. A new method of manteuvring tuggers without dipping
their Sails, by Which it is presumed hall the number of Men
requisite at present can put about a Lugsait Vessel, and that
too in a tenth parrof toc time.
4. An improved Square-sail; in which by a slight- altera-
tion of that Bail at_ present.in use,: the Leebunt, the bane of
Squardasails, is done away, and a 'Bunt to windward with a
straight Lee are alternately formed. The trouble and danger
in reefing are on this Sail in great Measure obviated ; and,
whilst the unproved Square-sail acquires more, than the
power of the Lug-sail, it still retains its present ra,.:.lity of
being Manoeuvred. Eiperiments have been We(' on this Sail
in several Voyages; and below are Copiei of the Captain's
Letters to the l'atenteea,,

To Messrs. Petvitice. and DUNKIN'.
CZNTLEMLN,
I have tne pleasure to inform you, that 1 bent your Patent
Square-sail as the Main-topsail on board the George -and
Frances Brig, and sailed with it from Ilelford to Swansea the
.5111 ittSt. The wind at South, I got round the Land's End
that aught, when it came at North-East, consequently right
a-head ; your S:iil so very much assisted us in ‘vorktqg the
Vessel to windward, that although I have had forty years
experience as a Seaman, I dr:el./re it is the finest Sail I ever
beheld, and were ail the Squareisails on your plan, 1 ant
confident any Vessel would gain to windward nearly as much
on one tack as site could on the old principle in two, as well
as have her velocity increased in other dire Lions of sailing ;
whilst in a gale of wind there is not halt the trouble or dan-
ger in reefing them. 1 am .now returned to this place ex-
tremely pleased with its ellea, and arch-Gentlemen,
Your humble Servant, •
LLIAM.TRANNACK.
Ilelfori River, May as, 1803.

Mr. PENNECK.

tIR,,
1 have the pleasure to inform you, that since I last wrote,
sailed from this place to Swansea and back again. The
ettkt or your Improved Square-sail is fully oqual to the ac.
count I before gave you, and is, in my humble opinion, a
very great and useful improvement.
I am, Sir, your most obedient humble Servant,
WILLIAM TRANNACK.

Brig George and Frances, • •
He'find Harbour, July .9, 1803.-
0:r Models of these improvements are now for, the in-
speztion of those Gentlemni, at. No. 27, NortiA,strect,
Strand, where they,may be seen from Ten in the Morning
till Five in the Afternoon ; or application may be made to
the Patentees, by Letters, post-paid, addressed to them at
Penzance, in Cornwall.