DOCUMENTARY HISTORY OF THE FLOBIDA CANAL


 Combined
 In-bound Out-bound in-bound
 to Gul from Gulf in ou-
 ports ports bound


From ports of Atlantic United States..................-........... 2, 506,498 ...
To parts of Atlantic United States....................................... 1,434,843 $3 341
From ports o foreign trade, aea A............................... 7056,00 -
To ports of foreign trade, ae A ............................................ 63210 1,338,110
 Total, or Gulf ports of United States....................... 3,211,998 2,0674 3 6,279,451
Between ports of the Atlantic United States and Tampico, Mexico,
 partial. Incomplete .....-..........--...-...... 26 186, 0 87,819
 Total ................-................-- ....... ...... 3,281,257 2,08, 013 6, 87,270
Combination passenger and freight vessels .................. ..-............ .....-..... 248,484
 Grand total ...-.....-........-................................. .......... 6,861.764

 MIXED CHARGE ON FLOATING PLANT

 24. Active flee saving.-Calculations of vessel operating costs have been based
 solely on the wages and subsistence of crews, on the cost of fuel, ship supplies
 and stores, repairs, and hull insurance, omitting entirely the capital costs, carrying
 charges, obsolescence, taxes and general overhead.
 Various factors, principally the class and the speed, enter into any estimate of
 construction costs, but conservative average valuations of the vessels concerned
 in our studies may be stated as follows:
 TABL I

 (a) Combination freight and passenger vessels:
 14 knots and over.----- -------------------.......... $2, 000, 000
 12 to 14 knots ---- ------------- ---------------- 1, 500, 000
 (b) Tankers in petroleum trade:
 12 knots and over--------------------------------- 1, 500,000
 Under 12 knots------------------------------- --- 1, 200,000
 (c) General-cargo vessels (all speeds):
 Coastwise trade.-------------..------------..--...- 900,000
 European trade.--..... -------------- ----------.- 700, 000
 25. Fixed charges on the foregoing classes may be summarized as follows:
 TABL II

 Combine-
 tion height Tankers in General-
 Charges and pe- petroleum cargo e-
 sner trade (per- aesb (per-
 vessels cetj cent)
 (percent)


 Interest on the investment..-- --------------------------6 6 8
 Amortiation or replacement....-------------------------.............................--3 a .87 3
 Taxs miscellaneous --------------------------------------- 4 4 4
 Overhead and shore administration----------------------------- 3 2 2
 Total......-....................................----------- 16 18.87 15

 t According to generally aepted authorities, the corrosive effect on petroleum tankers is very severe,
 and hence the higher amortization charge of 6.67 percent per year. According to these authorities this is,
 moreover, a low rate.

 For certain vessels additional charges seem to be warranted, as follows:
 (1) An additional 7 percent on vessels in the sulphur trade, due to the excep-
 tional corrosive action of the cargo;