|Qty.||Road||Numbers||Date||Builder's #s||Phase||Air Filter||Notes|
|5||AT||4000-4004||11/71||38031-38035||IIf1||paper||Auto-Train; built to SCL specs; 4004 equipped with FB-2 trucks 1972; 4001,4004 wrecked and scrapped 3/73|
|5||AT||4005-4009||12/72||38744-38748||IIf1||paper||Auto-Train; built to SCL specs|
|3||AT||4010-4012||5/74||39844-39846||IIg1||paper||Auto-Train; built to SCL specs|
|4||CR||2971-2974||12/74||40064-40067||IIh1||paper||built as AT 4013-4016 but never delivered; sold to CR 9/76, trucks changed to Type B before delivery|
|30||SCL||1748-1777||5-8/70||37411-37440||IIc||paper||Blomberg trucks; 1776 re# 1813 5/71; to SBD same nos., then 5700-5727,5764,5729, then CSX|
|25||SCL||1778-1802||3-5/71||37774-37798||IId,IIe,IIf1||paper||Blomberg trucks; 1801 wrecked and scrapped; 1778-1800,1802 to SBD same nos., then 5730-5753, then CSX|
|1||SCL||1776||6/71||37799||IIf1||paper||Blomberg trucks; Bicentenial paint scheme; to SBD same no., then 5728, then CSX|
|10||SCL||1803-1812||6-8/71||37800-37809||IIf1||paper||Blomberg trucks; to SBD same nos., then 5754-5763, then CSX|
|21||SCL||1814-1834||9-12/71||38036-38056||IIf1||paper||Blomberg trucks; 1814 wrecked and scrapped; 1815-1834 to SBD same nos., then 5765-5784, then CSX|
|21||SCL||1835-1855||1-3/72||38278-38298||IIf1||paper||Blomberg trucks; to SBD same nos., then 5785-5805, then CSX|
GE used a common body for the various U-boats, so this list is based on phases of the U30B.
Phase II with the forward radiator intake mounted high had oil bath filters; low-mounted intake was for paper air filters.
Phase IIc- the intake screens become corrugated instead of flat, and project slightly from the hood instead of being flush-mounted.
Phase IId- horizontal drip rail on the radiator disappears.
Phase IIe- built-up area on pilots disappears.
Phase IIf1- handrail notch in the stepwells becomes full length.
Phase IIg1- headlight casing becomes oval-shaped, not rectangular; cab side drip rail disappears.
Phase IIh1- square door laches become standard, battery box covers become smaller, cab door stiffener appears.
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