Thread: The end of cruise ships, as we know them?

Originally Posted by PerthDisco

Nope I’m not joking that’s how Austal ferries and most do the pax seating cabin spaces. These are big boats though and they are behind a coaming and not directly exposed to the weather but definitely in the salty sea air. Any house or hotel on the seaside would cop a similar beating.

Same for outdoor bar fridge or freezer units on a boat. You can buy a super marinised unit for a zillion dollars or just a domestic unit for a few hundred and replace it slightly more often

Its the coils that cop it first,these days.Not just the condenser,the evaps as well.

Full stainless commercial AC units can be special ordered from some manufacturers,at huge cost.We used some at Hay pt loading jetty a few years ago.

BlyGold coating is the go,google is your friend.They do a very good coil coating,actually pull the AC/Chiller/condensing unit/evap apart themselves and coat either the whole thing,or the coils,whatever the customer wants.
Prices are reasonable and its economical to even do a small split system,probably doubles the life of it on the coast,at least
We recently had some blast freezer evaporators done.

Originally Posted by 4bee

Of all the various Compressors I worked on over many years the Carrier 6DD79 was my favourite ( similar to the 06) Quiet, hardly any vibration & what there was was taken care of by spring Mounts No fractured pipes Good to work on & wait for it,....... Painted Carrier Green (or was it Carrier Blue???) as some claimed. Green in my book.

The Carrier systems I liked most were the 50K8, 10 & 16. which you may have used as the Air HANDLER on board.

I loved those Carrier 50K units as well,ran on R12/22/500 depending on the capacity.There were a heap of them at the Ford plant,Eagle Farm.
I remember doing the bearings on the supply fan,we had to put a coupling on them i think between the fan wheels as they had centre bearings.The complete shaft and fan wheels were to difficult to get off.
The 6D was a fantastic range of great compressors,79,75,48,29,etc.
Some had suction unloaders,others electric.
We had the little 29's on growth cabinets with liquid injection on R12 to keep them cold.They ran 24/7.Never stopped.

The 06E was no where near as robust,i never liked it,as we had quite a few issues with them.

i loved the 5H/F range as well,we did a heap of work on those,20,40,60,80,120.Some had water cooled heads on some applications.
Great quality,very reliable,and went for ever.
I remember going to Coles in Toowoomba one day,the fire alarm in the plant room had gone off.The 5H80 was still running,paint burnt off it,the pressure relief valve in the compresser had let go.When we pulled it down,the solder in the oil pickup strainer,and the unloader bellows had melted it had got that hot.

Kelvinater H,K,Y,T belt drives and Bitzers were a similar quality.Not much else was as good.Some larger Tranes/Yorks were not too bad,but no where near as good as Carrier.
A sniff of liquid,the Tranes were off on oil failure,and copper coating destroying shaft seals was always an issue,but not the Carrier5H/F,they just soldered on.

Back on topic,we used to have 5F/H on trawlers,well nearly on topic,they do float on the ocean...

Originally Posted by scarry

I loved those Carrier 50K units as well,ran on R12/22/500 depending on the capacity.There were a heap of them at the Ford plant,Eagle Farm.
I remember doing the bearings on the supply fan,we had to put a coupling on them i think between the fan wheels as they had centre bearings.The complete shaft and fan wheels were to difficult to get off.
The 6D was a fantastic range of great compressors,79,75,48,29,etc.
Some had suction unloaders,others electric.
We had the little 29's on growth cabinets with liquid injection on R12 to keep them cold.They ran 24/7.Never stopped.

The 06E was no where near as robust,i never liked it,as we had quite a few issues with them.

i loved the 5H/F range as well,we did a heap of work on those,20,40,60,80,120.Some had water cooled heads on some applications.
Great quality,very reliable,and went for ever.
I remember going to Coles in Toowoomba one day,the fire alarm in the plant room had gone off.The 5H80 was still running,paint burnt off it,the pressure relief valve in the compresser had let go.When we pulled it down,the solder in the oil pickup strainer,and the unloader bellows had melted it had got that hot.

Kelvinater H,K,Y,T belt drives and Bitzers were a similar quality.Not much else was as good.Some larger Tranes/Yorks were not too bad,but no where near as good as Carrier.
A sniff of liquid,the Tranes were off on oil failure,and copper coating destroying shaft seals was always an issue,but not the Carrier5H/F,they just soldered on.

Back on topic,we used to have 5F/H on trawlers,well nearly on topic,they do float on the ocean...

Paul, I don't think going Off Topic is such a bad thing. I am interested in other people's working lives( present & past (inc yours & Rick's) & happenings & it opens one's eyes as there is more to life here IMHO in the general section than Land Rovers. I'm sure Mods (& rockers ) would draw my/our attention to any diversions from the Named Thread if there is a problem.

Bless you my Son.

A fascinating chapter of maritime air conditioning is submarine air conditioning. I had a mate who was chief of the boat on Otama, back in the day, and had the opportunity to get a rub around on the air conditioning on the boat, reason being I had volunteered for submarines, and wanted a heads up , so to speak. My memory is not good enough for an in depth description, but here is a reasonable explanation.

Submarine Refrigeration and Air-Conditioning Systems - Chapter 19

Originally Posted by bob10

A fascinating chapter of maritime air conditioning is submarine air conditioning. I had a mate who was chief of the boat on Otama, back in the day, and had the opportunity to get a rub around on the air conditioning on the boat, reason being I had volunteered for submarines, and wanted a heads up , so to speak. My memory is not good enough for an in depth description, but here is a reasonable explanation.

Submarine Refrigeration and Air-Conditioning Systems - Chapter 19

Thats a good article that gives the basics of any AC unit,although going by system pressures,is probably operating on R12.

I wonder what precautions they took or were engineered into the vessel design, in case a line broke and the submarine ended up partially full of refrigerant?

Originally Posted by scarry

Thats a good article that gives the basics of any AC unit,although going by system pressures,is probably operating on R12.

I wonder what precautions they took or were engineered into the vessel design, in case a line broke and the submarine ended up partially full of refrigerant?

I ended up not joining the submarine service, I had the interviews and had done the psyche test [ I was considered mad enough] but as with most things, a woman came along, and changed my mind. It was the best thing as it turns out because I was posted to Darwin, and the Patrol Boat stream. At that stage Submarines and Patrol Boats were considered to be the only part of the Navy actually engaged in " active" service, so to speak.[ probably only by their crews] The Submarines were spying on Russia and China, the Patrol Boats were involved with policing the Australian fishing grounds, and that was full on, a story in itself. After Vietnam, service in the destroyers became mundane, peace time cruising, or so it seemed. Anyway, I believe I made the right choice as service In the Patrol Boats was busy and full on enough to keep me happy. However, I have this;

C.F. 'O' CLASS SUBMARINESMISCELLANEOUS SYSTEMS AND EQUIPMENT PART 4. - AIR CONDITIONING, VENTILATION AND REFRIGERATION 9.41 INTRODUCTION Air conditioning machinery is fitted to regulate the temperature and humidity of the air in the submarine. Cool dry air is distributed throughout the ship to create comfortable living conditions and to provide the best operating conditions for certain electronic equipment. A. Description 1. Supply Two air conditioning plants are fitted, both in the ACS. The forward plant supplies refrigerant to a Main Air Treatment Unit, and the after plant supplies refrigerant, through a FREON MAIN, to 13 air treatment units (SPOT COOLERS) situated in selected positions throughout the ship. A steel ventilation trunking runs from the main air treatment unit, up into the CR flat and forward into the F.T.R. Two 10" x 6" fans take a suction over the Main Air Treatment unit where the air is cooled and dried, and discharge into the trunking. Branches from this trunking run into messes, bunk spaces, machinery compartments, stores etc., and it can be shut off where it passes through bulkheads. For heating purposes, two 7KW electric heaters are fitted on the discharge side of the 10" x 6" fans. (Fig. 8) Another fan, a 9" axial flow, takes a suction from the vicinity of the ER door and discharges into another trunking, over a double spot cooler installed in the trunking and into the A.T.R. (Fig. 7) The remainder of the spot coolers have their own fans and cool in their own immediate vicinity. They are also fitted with electric heaters. (Fig. 6)

9-16

9-17

9-18

Ventilation System (Supply) Layout in ACS and AMS Fig 8 (Ojibwa Only)

9-19

Ventilation System-(Exhaust) Fig 9 (Ojibwa Only)

9-20

VENTILATION SYSTEM (EXHAUST) FIG 10 Layout in AMS/ACS (Ojibwa Only)

9-21

VENTILATION - SUPPLY AND EXHAUST - SS 73 & 74 FIG 11

9-22

9.41 INTRODUCTION (CONTD)A. Description (Contd) 2. Exhaust Three exhaust fans are fitted to discharge stale air back into the ACS: (Fig. 10)(1) 10" x 3" from Galley, W.T. Annex, Bathrooms, WCS (2) 10" x 3" from Gyro Room, W.T. office, Radar Equipment (3) 7 1/2" from S. R. bathroom and Sound Room. (See Fig. II for layout on SS 73 & 74) 9.42 REFRIGERATION For the preservation of foodstuffs for long periods, refrigerating machinery is fitted to supply: 1. Cold Cupboard - to hold foodstuffs to be frozen. Situated in the After Starboard corner of the ACS. 2. Cool Cupboard - to hold foodstuffs to be cooled. Situated immediately forward of the Cold Cupboard in the ACS. 3. Deep Freeze Unit - to hold foodstuff requiring additional cooling. Built into the Cold Cupboard. The Cold and Cool Cupboards are cooled by refrigerating machinery situated on the forward bulkhead of the Cool Cupboard. The Deep Freeze Unit is cooled by refrigerating machinery located in the vegetable locker. One self contained domestic type refrigerator is situated in the passageway outside the Senior Rates Mess, it is used by all messes. The machinery is automatic in operation and willmaintain the temperatures of the cupboards within the following limits:

9-23

FIG 12 BULKHEAD VALVE

9-24

9.42 REFRIGERATION (CONTD)a. Cold Cupboard 8°F - 14°F b. Cool Cupboard 36°F - 44°F c. Deep Freeze -10°F - 0°F Temperature Gauges for the Cold Cupboard, Cool Cupboard and Deep Freeze Unit are situated in the ACS and are to be checked every hour. In harbour these readings are to be recorded on the "below decks check off list" and at sea they are recorded in the Engine Room Register. Cooling water from the refrigerating and air conditioning machinery is supplied from the After Services System, via the forward services using a power operated supply valve.

Originally Posted by bob10

I ended up not joining the submarine service, I had the interviews and had done the psyche test [ I was considered mad enough] but as with most things, a woman came along, and changed my mind. It was the best thing as it turns out because I was posted to Darwin, and the Patrol Boat stream. At that stage Submarines and Patrol Boats were considered to be the only part of the Navy actually engaged in " active" service, so to speak.[ probably only by their crews] The Submarines were spying on Russia and China, the Patrol Boats were involved with policing the Australian fishing grounds, and that was full on, a story in itself. After Vietnam, service in the destroyers became mundane, peace time cruising, or so it seemed. Anyway, I believe I made the right choice as service In the Patrol Boats was busy and full on enough to keep me happy. However, I have this;

C.F. 'O' CLASS SUBMARINESMISCELLANEOUS SYSTEMS AND EQUIPMENT PART 4. - AIR CONDITIONING, VENTILATION AND REFRIGERATION 9.41 INTRODUCTION Air conditioning machinery is fitted to regulate the temperature and humidity of the air in the submarine. Cool dry air is distributed throughout the ship to create comfortable living conditions and to provide the best operating conditions for certain electronic equipment. A. Description 1. Supply Two air conditioning plants are fitted, both in the ACS. The forward plant supplies refrigerant to a Main Air Treatment Unit, and the after plant supplies refrigerant, through a FREON MAIN, to 13 air treatment units (SPOT COOLERS) situated in selected positions throughout the ship. A steel ventilation trunking runs from the main air treatment unit, up into the CR flat and forward into the F.T.R. Two 10" x 6" fans take a suction over the Main Air Treatment unit where the air is cooled and dried, and discharge into the trunking. Branches from this trunking run into messes, bunk spaces, machinery compartments, stores etc., and it can be shut off where it passes through bulkheads. For heating purposes, two 7KW electric heaters are fitted on the discharge side of the 10" x 6" fans. (Fig. 8) Another fan, a 9" axial flow, takes a suction from the vicinity of the ER door and discharges into another trunking, over a double spot cooler installed in the trunking and into the A.T.R. (Fig. 7) The remainder of the spot coolers have their own fans and cool in their own immediate vicinity. They are also fitted with electric heaters. (Fig. 6)

9-16

9-17

9-18

Ventilation System (Supply) Layout in ACS and AMS Fig 8 (Ojibwa Only)

9-19

Ventilation System-(Exhaust) Fig 9 (Ojibwa Only)

9-20

VENTILATION SYSTEM (EXHAUST) FIG 10 Layout in AMS/ACS (Ojibwa Only)

9-21

VENTILATION - SUPPLY AND EXHAUST - SS 73 & 74 FIG 11

9-22

9.41 INTRODUCTION (CONTD)A. Description (Contd) 2. Exhaust Three exhaust fans are fitted to discharge stale air back into the ACS: (Fig. 10)(1) 10" x 3" from Galley, W.T. Annex, Bathrooms, WCS (2) 10" x 3" from Gyro Room, W.T. office, Radar Equipment (3) 7 1/2" from S. R. bathroom and Sound Room. (See Fig. II for layout on SS 73 & 74) 9.42 REFRIGERATION For the preservation of foodstuffs for long periods, refrigerating machinery is fitted to supply: 1. Cold Cupboard - to hold foodstuffs to be frozen. Situated in the After Starboard corner of the ACS. 2. Cool Cupboard - to hold foodstuffs to be cooled. Situated immediately forward of the Cold Cupboard in the ACS. 3. Deep Freeze Unit - to hold foodstuff requiring additional cooling. Built into the Cold Cupboard. The Cold and Cool Cupboards are cooled by refrigerating machinery situated on the forward bulkhead of the Cool Cupboard. The Deep Freeze Unit is cooled by refrigerating machinery located in the vegetable locker. One self contained domestic type refrigerator is situated in the passageway outside the Senior Rates Mess, it is used by all messes. The machinery is automatic in operation and willmaintain the temperatures of the cupboards within the following limits:

9-23

FIG 12 BULKHEAD VALVE

9-24

9.42 REFRIGERATION (CONTD)a. Cold Cupboard 8°F - 14°F b. Cool Cupboard 36°F - 44°F c. Deep Freeze -10°F - 0°F Temperature Gauges for the Cold Cupboard, Cool Cupboard and Deep Freeze Unit are situated in the ACS and are to be checked every hour. In harbour these readings are to be recorded on the "below decks check off list" and at sea they are recorded in the Engine Room Register. Cooling water from the refrigerating and air conditioning machinery is supplied from the After Services System, via the forward services using a power operated supply valve.

Some great stuff there on AC & Vent. I have often wondered how it was all done. Thanks Bob.


You got any info about the Rating who holds an Umbrella over the gun so it doesn't get wet when submerged?

Originally Posted by 4bee

Some great stuff there on AC & Vent. I have often wondered how it was all done. Thanks Bob.


You got any info about the Rating who holds an Umbrella over the gun so it doesn't get wet when submerged?

Pretty sure that would have been my job.