Conway Maritime Press - Warship 44

type (160 x 65 x 7.5 x 10.5mm) spaced 550mm apart. The
forward and aft tapered parts of the pressure hull were
stiffened internally with steel sections of the T-bar type,
spaced 500mm apart. To facilitate repairs, removable plates
were provided in the pressure hull above diesel engines, main
electric motors,/generators and battery tanks.
The hull was subdivided by four spherical bulkheads
designed to a load of 8kg/cm2 and three flat bulkheads
designed to a pressure of lkg/cm2. The double bottom was
carried in the tapered parts of the hull only, while the
cylindrical section was fitted with watertight floors, except
the engine room and main electric motors,/generators
compartment.
A cylindrical conning tower of 2500mm diameter and
10mm plating was mounted atop the pressure hull amidships
with 2100mm diameter gun tower placed abaft.
Fnpn rlooDrNc HULL
Built fro:n 5-7mm plates with 14mm horizontal and llmm
vertical keel. The watertight channel keelson was carried
underneath to sewe as a drain tank and stowage room for pig
iron. Both ends of the pressure hull were streamlined by a
light hull structure with 1000mm deep ice belt at the bow.
In the space between inner and outer hulls, six MBT and
two regulating tanks were provided. Most of the main ballast
tanks, hull casing and bridge superstructure were built from
3mm plating with deck structures fitted with wooden
gratings.
Teak wood clad officers' quarters ofOrzeJ (view taken from
the ward room looking aft on the spherical bulkhead at
frame 85). On the right the entrance door to the first officer's
quarters. I{oninklijke Moatschappij de *helde.
View on the bulkhead at ftame 85 from another side than on
the previous photograph - central station of Orzel. Onleft of
the hatch Ore cruising periscope with hydraulic ram. On the
right the hydraulic ram operating ballast valve as well ae the
steering wheel with a gyr.o repeater and rudder indicators
are visible. At the extreme right is the master gyrocompass.
Koninklijkn Maatschappij de &h.elde.
Deck fittings and equiprnent
SrppnrNc cpAR
Semi balanced rudder of 8.41m2 and a pair of diving planes
totalling 2 x 7.8m2 were mounted aft, the latter in a single
plane with the shaft axis. The forward pair of diving planes
totalling 2x 4.2m2 could be folded horizontally into the hull
casing. They were faired to clear mine cables and protected
by guard rods when folded.
ANCHOR AND TowING ARRANGEMENT
T'he bow on anchor of the Hall type was carried in a recess en
the port side with 100m of 30mm chain cable stowed in the
locker placed between the bow torpedotubes. lfre anchorwas
operated by a windlass powered by pneumatic motor situated
in the forward torpedo compartment. A bow capstan
was driven via the gearbox by the windlass motor, while a
stern capstan was powered by a 5hp pneumatic motor. The
capstans and three sets of double bollards could be lowered
into the hull casing.
Mesm AND RIGGING
The 6.5m hydraulically raised mast for wireless aerials was
.mounted in the port side of the conning tower. It allowed the
use ofwireless at periscope depth. A pair ofcopperwire-ropes
were fitted forward of the bridge superstructure and a single
steel cable provided abaft to serve as mine buffers. They
could also be used as reserve radio aerials. Two net cutters
with blades of hardened stainless steel were secured to the
stem.
Lrrp sevluc EeuTPMENT
The motor boat and small folding boat were stowed abaftthe
gun tower and protected by an extension of the bridge casing
which could be elevated for launching operations. The 200-
litre petrol tank was placed nearby.
TVo lifebuoys were fitted inside the bridge superstructure.
The telephone buoy was sited in the hull casing aft and the
salvage buoy with 120m flexible air hose was fitted forward.
The air hose was connected by the check valves with a high
pressure air main.
Machinery
Pnopur.sroN MACHTNERY
There was a two-shaft powerplant with two supercharged
diesel engines mounted in the engine room and connected by
hydraulic K 138 type Vulkan couplings with two main
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