Starship design in Star Trek is brilliant, with many unique and identifiable ships. Most of this is down to the silhouette of the saucer section and nacelles. While much has been explained on the warp nacelles, not as much reason was given as to why the saucer section was just that; a saucer. Let's take a look at the lore reasons and the behind the scenes reasoning for the saucer section design.
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This Video is for critical purposes with commentary.
Outro Animation made by @icarogabriel17