Haven-class Hospital Ship
The ''Haven'' class of hospital ships were built for the United States Navy (USN) during World War II. ''Haven''-class ships also served in the Korean War and the Vietnam War. They were among the first ships to be able to receive casualties directly by helicopter and were the first fully air conditioned ships in the USN. The first ship was laid down in July 1943, while the last was launched in August 1944. In that span the United States produced six ''Haven''-class hospital ships. The last ''Haven''-class ship was struck from the Naval Vessel Register in 1989. One ship sank in a collision in 1950; the five others were Ship breaking, scrapped. ''Haven''-class hospital ships were replaced with the s. Design and description The class was based upon the United States Maritime Commission's (MARCOM) Type C4 ship (as C4-S-B2 design). The six hospital ships of the ''Haven'' class had a standard displacement of and a full load displacement of . They measured Waterline length, long at the ...
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Lead Ship
The lead ship, name ship, or class leader is the first of a series or class of ships all constructed according to the same general design. The term is applicable to naval ships and large civilian vessels. Large ships are very complex and may take as many as five to ten years to build. Improvements based on experience with building and operating the lead ship are likely to be incorporated into the design or construction of later ships in the class, so it is rare to have vessels that are identical. The second and later ships are often started before the first one is completed, launched and tested. Nevertheless, building copies is still more efficient and cost-effective than building prototypes, and the lead ship will usually be followed by copies with some improvements rather than radically different versions. The improvements will sometimes be retrofitted to the lead ship. Occasionally, the lead ship will be launched and commissioned for shakedown testing before following ship ...
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