A Theory of Optimum Ship Size

A Theory of Optimum Ship Size

trade volume, value and distance are the factors determining the best size of ships. The author develops a model to examine the theory, and finds it supported by evidence for vessels carrying grain and iron ore. Ports must provide depth of water and facilities according to demand.

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Economies of Scale in Bus transport: I. Some British Municipal Results

This study was prompted by the proposal to merge a number of municipal transport undertakings into Passenger transport Authorities. The authors analyse figures showing various working expenses per bus-mile, and find no evidence of scale economies. They point out, however, that the P.T.A.s will be larger than any undertaking in their sample, and that a different conclusion might conceivably be reached if data were available on costs per passenger-mile. Extension of one-man operation appears to offer greater scope for economies than amalgamation.

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