Once More into the Merchie Breach

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JWE
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Once More into the Merchie Breach

Post by JWE »

OK, a few blivets in the format, but ya'll can figure it out. This is a non-RHS post, for general consumption, for ordinary people wishing to get a handle on transport OOBs.

Code: Select all

5 years	6-10	11-15	16-20	21-25	> 25
 or less	years	years	years	years	years
 
 U.S.		  6	  6	  4	35	38	11	70% are 12 kts or less; 13% are 14 kts or more	1590 vessels >1000 grt	  8,570,000 total
 UK		21	11	24	21	12	11	44% are 12 kts or less; 24% are 14 kts or more	3050 vessels >1000 grt	16,650,000 total
 Norway		24	21	18	16	10	11	38% are 12 kts or less; 33% are 14 kts or more	1080 vessels >1000 grt	  4,550,000 total
 Japan		27	11	  7	16	23	16	47% are 12 kts or less; 41% are 14 kts or more	1220 vessels >1000 grt	  5,260,000 total
 Holland		23	  8	20	25	  9	15	~ 50% 12 kts or less; ~ 30% are 14 kts or more	  550 vessels >1000 grt	  2,725,000 total
 
 Of the US total of about 8,570,000 registered shipping tons (vessels >1000 grt), as of Jan. 1941, the employment breakdown is as follows:
 
 Laid Up		1,200,000		14%	850,000 tons fitting for Govt. charter for North Atlantic service
 Active in Trade	7,370,000		86%
 Of Active:
 	Foreign Trade	2,950,000	34% of total; ~ 541 vessels 2500 grt or greater
 	Coastwise Trade	4,420,000	52% of total
 
 Of Foreign Trade:
 	Local		   750,000	  9% of total;  Canada, Mexico, Central America, West Indies,  and North Coast of So. America to and including the Guianas
 	Europe		   900,000	11% of total;  Mainly to UK, minimal to Spain, Portugal and Sweden
 	South Atlantic	   620,000	  7% of total;  Including So. America below the Guianas and Africa from Gibraltar to Kamerun
 	Far East		   650,000	  8% of total;  Including Orient, India, Australasia and Africa from Angola to Mozambique
 
 ~125 vessels 2500, tons or greater, engaged in Far East service, as of Jan. 1, 1940, of which ~100 can be designated to the Orient, India, Australasia routes. 
 
 Of the UK total of about 16,650,000 registered shipping tons (vessels >1000 grt), as of Jan. 1941, the employment breakdown is as follows:
 
 Laid Up		  3,100,000		19%	North Sea and Baltic route ships; 1,200,000 tons allocated for conversion to Naval Auxiliaries
 Active in Trade	13,550,000		81%
 Of Active:
 	Foreign Trade	6,288,000	38% of total; ~ 1155 vessels 2500 grt or greater
 
 Of Foreign Trade:
 	Far East		1,950,000	12% of total; Including Orient, India, Australasia and Africa from Angola to Mozambique 
 Approximately half of this tonnage is Intranational and local routing; Capetown thru Singapore, spanning Karachi, Ceylon, Dacca
 
 ~ 150 vessels 2500, tons or greater, engaged in Far East service, as of Jan. 1, 1941, of which ~40 can be designated to Australasia routes, ~ 25 to Southern and Eastern Africa, ~ 20 to Burma/Singapore, and the remaining ~ 65 to Ceylon/India.  
 

Alfred
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RE: Once More into the Merchie Breach

Post by Alfred »

JWE,
 
Nice info.  Just wondering if you have the aggregate tonnage (no need to expend effort on detail breakdown as per your post) for Germany and Italy to put Japanese tonnage in Axis context.
 
Alfred
el cid again
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RE: Once More into the Merchie Breach

Post by el cid again »

Where does the data come from?

Can we have it by category? It matters a great deal how many tankers, ore carriers, break bulk freighters, passenger ships, liners, etc are in the mix. And is the data limited only to ships over 1000 tons? Can the source provide deadweight, gross or net tonnage, or passenger data - or only grt? GRT is a somewhat unfortunate and slippery measurement of volume - and it isn't the clearest indicator of the capacity of a ship for various cargos - as you know. More data always helps when trying to assign ships. Breaking down the data by ship type, with more cargo data, and speeds, would be very nice to have. And of course it would be very lovely to know the engine type, fuel type, bunkerage, and waterline length (= efficient speed limiting factor) for each group.
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JWE
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RE: Once More into the Merchie Breach

Post by JWE »

ORIGINAL: el cid again

Where does the data come from?

Can we have it by category? It matters a great deal how many tankers, ore carriers, break bulk freighters, passenger ships, liners, etc are in the mix. And is the data limited only to ships over 1000 tons? Can the source provide deadweight, gross or net tonnage, or passenger data - or only grt? GRT is a somewhat unfortunate and slippery measurement of volume - and it isn't the clearest indicator of the capacity of a ship for various cargos - as you know. More data always helps when trying to assign ships. Breaking down the data by ship type, with more cargo data, and speeds, would be very nice to have. And of course it would be very lovely to know the engine type, fuel type, bunkerage, and waterline length (= efficient speed limiting factor) for each group.

Industrial Economics Division, US Bureau of Foreign and Domestic Commerce, and US Maritime Commission, Congressional Reports, each prepared annually and presented to Congress in December of the year. For the Brits, sources include WSA records, with portions taken from Lloyds routing and actuarial tables for the period 1937 - 1939 (as of March 1940), and verified against contemporary US data developed by US Maritime Commission. And my handy dandy HP calculator.

Things aren't categorized for summary reports like this. Categorization is a ship-by-ship, or class-by-class, chore. Relevant data for this is obtained from Lloyds, Registre Veritas and American Bureau of Shipping. Reasonably good data for Japan may be found in the ONI 208 series docs.

Relevant data from government and industry is identified as comprising vessels 1000 GRT and over.
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JWE
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RE: Once More into the Merchie Breach

Post by JWE »

ORIGINAL: el cid again

Where does the data come from?

Can we have it by category? It matters a great deal how many tankers, ore carriers, break bulk freighters, passenger ships, liners, etc are in the mix. And is the data limited only to ships over 1000 tons? Can the source provide deadweight, gross or net tonnage, or passenger data - or only grt? GRT is a somewhat unfortunate and slippery measurement of volume - and it isn't the clearest indicator of the capacity of a ship for various cargos - as you know. More data always helps when trying to assign ships. Breaking down the data by ship type, with more cargo data, and speeds, would be very nice to have. And of course it would be very lovely to know the engine type, fuel type, bunkerage, and waterline length (= efficient speed limiting factor) for each group.

OK, here's some by category.

The following is the total tonnage; includes ships that were taken for conversion, refitting, redesignation, whatever, so the numbers represent what might have been available in 1939. Where available, notes give the disposition of vessels in a category, as of January 1, 1942. Totals include captured vessels (Pres. Harrison, for example) as well as foreign vessels taken into service (Scharnhorst, Conte Verde, for example).

13 passenger ships > 12,000 GRT (12-18,000 GRT) - 5 undergoing conversion to CV, 2 more to AMC thence to CV. 6 available of which 2 taken by IJN and fitted as naval transports.

13 passenger ships: 10 – 11, 999 GRT – 3 undergoing conversion to AMC, 3 more to AS. 7 available, of which 3 taken by IJN and fitted as naval transports.

17 Passenger ships: 8 – 9,999 GRT – 2 declared AH, 3 more undergoing conversion to AS. 12 available of which 5 taken by IJN and fitted as naval transports.

23 Passenger and P&C ships: 5 – 7,999 GRT – 3 undergoing conversion to AS, 2 declared AH. 18 available of which 6 taken by IJN and fitted as naval auxiliaries/transports.

27 Passenger and P&C ships: 3 – 4,999 GRT – none taken by IJN and fitted as naval transports.

28 Passenger and P&C ships: 1 – 2,999 GRT – none taken IJN and fitted as naval transports.

Tankers: basically an engines-aft analysis. 22 purpose built tankers at and over 9,000 GRT found. 20 purpose built tankers between 5 – 9,000 GRT found. NCDwT is from shipping company records and is what could be loaded without sinking the poor thing; much more interesting than barrel capacity. The 18 vessels of the Amakasu Maru class designated as tankers, is a guestimate. They were all engines-aft cargo ships, but I wanted to give people something to play with, so I arbitrarily designated 33% of them as tanker conversions; my choice, my nickel, so sue me.

5 vessels > 11,000 GRT (3 at 13,800 metric ton NCDwT capacity, 1 at 15,550 , 1 at 9,250)
17 vessels: 9 – 10,999 GRT (capacity between 10,280 and 10,740 metric tons NCDwT), 4 similar configured for general cargo.
13 vessels: 7 – 8,999 GRT (capacity between 8,400 and 8,750 metric tons NCDwT), 9 similar as Shiratoko AO
7 vessels: 5 – 6,999 GRT (avg. estimated capacity approx 6,150 metric tons NCDwT, as TK), 5 similar configured as reefer and general cargo.
2 vessels: 3 – 4,999 GRT (capacity of 4,575 metric tons NCDwT as TK), 7 similar configured as reefer and general cargo.
0 vessels: 2 – 2,999 GRT, 7 similar configured as general cargo.
18 vessels 1 – 1,999 GRT (avg. capacity 1,400 metric tons NCDwT as TK), 36 similar configured as general cargo.

el cid again
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RE: Once More into the Merchie Breach

Post by el cid again »

Very nice.
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JWE
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RE: Once More into the Merchie Breach

Post by JWE »

Thank you.
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