60
CHANGES IN TRAWLING VESSELS SINCE
winches, one being behind the foremast, the other (smaller)
behind the mainmast.
The latter is very useful in discharging
,_
shes, and in working the dandy.
In general, the Granton
‘ships have the steam—winch in front, with the capstan behind,
'
,
iust before the engine—room, a different arrangement from that
_
'
at Aberdeen.
Moreover, a decided improvement is introduced ' '
'
by the presence of a ‘ brake
’
in connection with this apparatus.
In 1884 reliance was placed on the old hawser xed to the
'
trawl-wàrp in the case of the net being held by a sunken wreck ' , ' '
or
a
rock.
Now, the moment the net is xed, the
’
(which is securedto a moderate degree) permits the trawl—warp '
to run out, and thus save the net from serious rupture ortotal
.
_
_
.
destruction while the ship is being stopped.
In the
,.
Ships an iron—wire rope is used instead of a hawserfrom a hook
on the mainmast, to save rubbing on the rail.
This is xed to _
the traWl—warp‘ by spun—yarn. The length of the trawl—warp,
which is- of steel—Wire rope, ranges from 200 to 2450 fathoms.
The warp
has six outer and a central strand.
The older warps
had a Manilla centre, but the newer have wire. A change has
'
'.
,
also been made in the teeth of the wheels of the winch,for, ?
_
_
îinstéad of being transverse, they are'i10w helical or oblique, in
'
such ships as the ‘ Belcher.’ The Warp is run round a capstan
'
'
in rear, and out by a slit with rollers in the bulwarks of the
ship.
The large ends—of the Winch are used, as formerly, for
'
.
windin—g the bridles and all ropes and tackle, the latter being _"
_
’
-
still the methOd of hoisting on board the bag _of
"" the trawl.
'
_
Instead, however,. of the snatch—blocks being xed to the deck,
“they now are attached to the top of the engine—room. A
considerable number of the paddle-ships still use a 9—iiich
—
'f
Manilla hawser as trawl-warp, and it is wound round a capstan -
.
from wheels beneath the deck.
These also have the piece of“
,
old hawser (at Montrose of about 13 fathoms) as _a guard
during trawling,
as indicated, the best screw—trawlers have“ ,
_
the ‘brake’ on the winch. In one or two of the oldGrtraw‘lefs * Ï
_
at Granton, the narrowness of the ship has caused the Winch to
'
be placed on the fore-part longitudinally, not tranSVersely.
"
In the trawling ships of
'
”po—day the front wing of the otter—' , ‘ '
:
trawl is set free and the sole—rope and net follow it. The mate
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,
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