Shipboard life support and food per person per day?

[aramis]

Given that you are projecting to the 56th Century, when we are currently somewhat into the 21st Century, you are talking about 3500 years into the future. That is about the same period of time as from the present back to the reign of the Egyptian Pharaoh Thutmose the Third, circa 1500 BC. How many countries and empires have disappeared since then? For that matter, how many empires have disappeared since 1900? We write based on present conditions, somewhat like the British authors did around 1900 when they assumed that the British Empire would be around forever. That did not last past the Second World War.

Timerover51 - My mirth is at the vast changes in North Africa between the the Solomani Rim War (circa 1090, the timeframe of Invasion: Earth) and the late Classic era (1113, as seen in TD13).

 

[Rupert]

Timerover51 - My mirth is at the vast changes in North Africa between the the Solomani Rim War (circa 1090, the timeframe of Invasion: Earth) and the late Classic era (1113, as seen in TD13).

The 1113 map certainly shows a heck of a lot less urbanisation, as well as a the changes to North Africa you note (1090 most of it is still desert, in 1113 it's supposedly mostly farmland).

 

[Condottiere]

I recall the Egyptians actually wanted to nuke their own inland sea, in order to greenize their desert.

 

[kilemall]

I recall the Egyptians actually wanted to nuke their own inland sea, in order to greenize their desert.

Part of Project Plowshare I’m sure.

Project Plowshare - Wikipedia

en.m.wikipedia.org

Good question, what is the half life of meson gun detonation? Perhaps a suboptimal yield version can have lower half life and thus be a suitable terraforming tool.

 

[aramis]

Part of Project Plowshare I’m sure.

Project Plowshare - Wikipedia

en.m.wikipedia.org

Good question, what is the half life of meson gun detonation? Perhaps a suboptimal yield version can have lower half life and thus be a suitable terraforming tool.

Given that it turns it's primary burst zone to dust, per Striker, it'd be a fairly short one. One certainly could carve an inland sea... but notice that it's fully a hex bigger in 1113...

 

[Timerover51]

Timerover51 - My mirth is at the vast changes in North Africa between the the Solomani Rim War (circa 1090, the timeframe of Invasion: Earth) and the late Classic era (1113, as seen in TD13).

I have not the foggiest idea of what you are talking about.

 

[mike wightman]

The map in Invasion: Earth shows considerable changes to land masses, while the map in TD13 doesn't show them in the same way.. How you get an electronic version of TD13 is a question I wouldn't mind being answered.

 

[Nightwind1]

You are not going to serve someone who just paid 10,000 or 8000 Credits to travel on your ship Meal, Ready to Eat. Nor are you going to feed your crew continuously on MREs, unless you are looking for a mutiny.

The U.S. Army allows 6 pounds per man per day for the Field A ration, which consists as follows:
It consists of approximately 200 items, including such perishables as fresh and frozen meats, vegetables, and fruit. It is intended for use primarily under stable conditions and during static phases of military operations when normal cooking and refrigeration facilities are available. It should be issued in preference to any other type of ration whenever it is available and circumstances permit its use (0.183 cu ft per ration). Field ration B is the same as the field ration, with nonperishables substituted for perishables (0.1269 cu ft per ration). The Army also budgets 3 cubic feet of refrigerator and freezer space per man per month.

Water requirements range from 15 gallons of water per day per man for a temporary camp to 30-60 gallons per day per man for a semi-permanent camp. The 15 gallons per day includes bathing. Allowing for efficient water recycling of say 90%, 30 gallons per man for water should be ample unless you would prefer allowing 60 gallons per man. One cubic meter equals slightly over 264 gallons and 35 cubic feet.

Therefore one cubic meter of water would supply 4 to 8 men, assuming recycling. One cubic meter of food would supply 190 men for one day assuming Field Ration A, or 275 men for one day assuming you are using Field Ration B with non-perishables. One cubic meter of refrigerator/freezer space would be sufficient for 11 men for one month.

The galley for the U.S. Coast Guard buoy tender Bramble was 15.5 feet by 15 feet, and could feed a crew of 50 to 80 men. If you want, I can supply the area of the mess spaces, but assuming the eating area would approximate the wardroom of the Bramble, that would be 17.5 feet by 17.5 feet. The galley would then be 3 of the standard 1.5 meter deck squares by 3 deck squares, or 9 deck squares. The wardroom would be say 4 by 4 deck squares, or 16 deck squares.

Unlike Marc, I figure on three 8 hours watches per day, so my ship crews are considerably larger than the standard for Traveller. I include a Steward, a Master Cook, and one Cook's Assistant. If the ship regularly carries passengers, those numbers would increase.

One Traveller dTon of water would be sufficient for between 54 and 108 men for an extended period of time, assuming the dTon to be 13.5 cubic meters. One dTon of food would supply 2565 man-days of food at the Field Ration A requirement, or 3700 man-days of food using Field Ration B. The amount of refrigerator/freezer space would be set by the maximum number of persons on board.

All of the above data is taken from FM 101-10, Staff Officers' Field Manual-Organization, Technical,and Logistical Data, Part 1-Unclassified Data, 1959.

For a quick rule of thumb, you can assume that one long ton, 2240 pounds, of rations will occupy 94 cubic feet, that would feed about 370 men for one day. That comes from FM 55-15, Transportation Reference Data, 1960. Ninety-four cubic feet would equal about 2.66 cubic meters.

The U.S. military currently assume the calorie requirements of sedentary men at 2900 calories per day, and 2400 calories per day for women.

I should say that I served as a quartermaster officer in the U.S. Army, and I am one of those strange individuals who find logistics absolutely fascinating.

I was a Subsistence Specialist (Cook) on a 180" buoy-tender, sister-ship to Bramble (USCGC Sundew, WLB-404). The galley was primarily prep and cooking space, with a reefer and freezer about the size of home fridges. We kept the majority of frozen and reefered stores below-decks in larger walk-in reefer and freezer. Dry stores were kept in their own storage compartment just off of the forward berthing.

For food prep, the small galley had a fryer, a flattop, a six-burner stove and two ovens (under the flattop and stove). The space also included a sink, a couple of counters, a steamline for serving, a couple of cupboards and a large-ish stand mixer.

 

[aramis]

The map in Invasion: Earth shows considerable changes to land masses, while the map in TD13 doesn't show them in the same way.. How you get an electronic version of TD13 is a question I wouldn't mind being answered.

It's a scan.

 

[Timerover51]

I was a Subsistence Specialist (Cook) on a 180" buoy-tender, sister-ship to Bramble (USCGC Sundew, WLB-404). The galley was primarily prep and cooking space, with a reefer and freezer about the size of home fridges. We kept the majority of frozen and reefered stores below-decks in larger walk-in reefer and freezer. Dry stores were kept in their own storage compartment just off of the forward berthing.

For food prep, the small galley had a fryer, a flattop, a six-burner stove and two ovens (under the flattop and stove). The space also included a sink, a couple of counters, a steamline for serving, a couple of cupboards and a large-ish stand mixer.View attachment 5765

Excellent shot. Thank you very much.