The Ptolemy class transport was the first in a line of successful
high-load warp transports used by the Federation. Equipped with specially
designed warp engines suitable for towing mass never before realized, the
vessels were a boon to infrastructure building outside the core of the
Federation. Initially, production contracts called for 30 ships of this
class to be constructed. However, due to the fleet-wide ship build-up at the
time it was commissioned, limited appropriations permitted the construction
of only 15 of the class.
This modified version was first built in 2242 alongside the standard
version, it featured more discreet hull mounted deflectors as opposed to the
large dish of the standard ships. Post war most of the class were converted
to this standard, which gave no performance benefits, but considerably
improved reliability.
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