A Lecture, Or Essay On the most efficacious means of Preserving The Lives Of Shipwrecked Sailors And The Shipwreck
Forfatter: George William Manby
År: 1813
Forlag: William Clowes
Sted: London
Sider: 39
UDK: 627.9
Delivered at Brighton, for the benefit of the Sussex County Hospital, on the 23rd of October, 1813
Søgning i bogen
Den bedste måde at søge i bogen er ved at downloade PDF'en og søge i den.
Derved får du fremhævet ordene visuelt direkte på billedet af siden.
Digitaliseret bog
Bogens tekst er maskinlæst, så der kan være en del fejl og mangler.
11
admit of—at the same time of sufficient power. However, portability
must be considered the very first essential in this service ; a brass 5£-inch
mortar, will project a 24-pounder shot with a IJ-inch rope attached
to it, the distance of 200 yards and upwards against the most powerful
wind ; the mortar on its wooden bed weighs about 3 cwt., may be
carried on a hand-barrow by two persons, with ease. A mortar
of this description will give an adequate power to haul off a boat to
a stranded vessel, when the crew are unable to assist themselves.
The application of a small and very portable mortar of this kind
offers considerable advantages, by facilitating communication when the
stranded vessel is in momentary danger of going to pieces, and parti-