The St. Mungo was powered
by two eight cylinder Glenifer diesel engines rated at 160BHP at
900rpm giving the vessel a service speed of 9 knots. A further 2
knots could be achieved by engaging all four engines and turning
the deck monitors backwards .
The fire fighting and salvage
equipment consisted of two independent 4 stage turbine pumps, each
driven by a Paxman 12 cylinder diesel engine developing400BHP
at 1,000rpm, each pump had having a capacity of 2,800 gallons per
minute on fire fighting duties and 3,000 gpm for salvage duties.
The pumps served the six monitors, two of which were located on the
foredeck and the other four on a platform aft of the wheelhouse.
Four five way deliveries were fitted on the deck (two on either side
fore and aft) which meant that up to 20 feeds could be taken to supply
water to shore based appliances. In order to avoid confusion, a system
of tallies was used to identify which individual delivery was providing
water to which appliance.
This system however failed
on one occasion during a multi pump fire, when a redundant delivery
with no marking was connected into the inlet of the Canteen Unit.
It was only after some of the personnel began to feel unwell that
it was discovered that the water feeding the Canteen Unit had come
directly from the St Mungo.
Auxiliary power was provided
by a 27hp diesel engine driving a 4kw generator; this was also coupled
to a 350gpm fire pump, which provided water for foam generators.
A six-inch suction coupling enabled the St.Mungo to be used for marine
salvage work. The main suction inlets for the fire pumps were located
on the bottom of the vessel on both the port and starboard sides.
The inlets could be flushed from inside the strum boxes using high-pressure
water jets. The aim of this operation was to prevent the inlets from
becoming choked.
On many occasions small eels or elvers were
found to be in residence in the strum boxes.
The engines were controlled
by means of telegraph from the wheelhouse, this was replaced in November
1972 to enable full control from the wheelhouse.
Many of the personnel of the
Marine as it was known, had been at sea before joining the Fire
Brigade and most of those sea faring firemen had their roots in the
highlands and islands of Scotland. I remember on several occasions
being detached to the Fireboat only to find they spoke a language
totally foreign to me.
By the mid seventies, shipbuilding
on the Clyde was in decline. Many yards had closed, perhaps as a
result of cheaper building costs in the Far East and a failure to
invest in new shipbuilding techniques and practises. The Port of
Glasgow had also seen a reduction in tonnage being unloaded. Queens
Dock, Princes Dock, Terminus Quay Plantation Quay and others had
all closed.