7TH Naval Construction Regiment Command Coin, 1.75 inch Antique Brass Coins, Color 1 Side. The SEVENTH Naval Construction Regiment (7th NCR)! The 7th NCR is homeported in Gulfport, Mississippi. Reporting to Naval Construction Group (NCG) 2, the regiment exercises command and control of two naval mobile construction battalions: Naval Mobile Construction Battalion 14(NMCB-14) and Naval Mobile Construction Battalion 27(NMCB-27)