ENCLOSURE "A"
 
 
     MOBILITY AND UTILIZATION 0F AMPHIBIOUS  ASSAULT CRAFT
                          ASSUMPTIONS
 
1. It is assturned that:
 
     a. HUSKY will be successfully completed by mid-August
1943.
 
     b. HUSKY will be followed by (a) further operations in
 
the MEDITERRANEAN (b) no further operations in the MEDITERRANEAN.
 
c. Landing craft will be assembled in the UNITED KINGDOM
 
for an assault, on the Continent with target date 1 April 1944.
 
   d: Objectives in the PACIFIC will be:
 
      (1) Ejection of Japanese from ALEUTIANS.
 
      (2) Seizure of MARSHALL ISLANDS.
 
      (3) Seizure of SOLOMONS and BISMARCK ARCHIPELAGO.
 
e. ANAKIM will be executed beginning 1 November 1943.
                                                  
2. For basic data see Appendix  "D"
 
                              DISCUSSION
 
3. The necessity for a detailed tactical plan of the operation
 
and its planned logistical support is a basic factor of primary
 
importance in any study concerned with a determination of numbers
 
and types of landing craft required for a given operation. One
 
of the principal reasons that there are various types in ex-
 
istence is the fact that certain types are more efficient under
 
a given set of circumstances than others. It does not follow,
 
however, that one type can be substituted for another simply
 
because there are a variety  of types available. While it is true
 
that a given operation may call for certain types and, lacking
 
those types, others can be substituted, this substitution should
 
never be made unless two factors are known,  namely (1) hydro-
 
graphic conditions, and (2) the use intended. It should always
 
 
 
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