Table:
0
A
B
C
D
E
1
Yard Name
Location (City, State)
1st Ship Delivery Date
Ship Types Delivered
Total Number of Ways
2
Cargill Inc.
Savage, Minnesota
November 1941
T1 type
number
3
Leatham D. Smith Shipbuilding Co.
Sturgeon Bay, Wisconsin
November 1942
C1-M type, N3 type, S2 (frigate) type
number
4
Walter Butler Shipbuilders
Superior, Wisconsin
December 1942
C1-M type, N3 type, S2 (frigate) type
number
5
Froemming Brothers
Milwaukee, Wisconsin
April 1943
C1-M type, V4 type, S2 (frigate) type
number
6
American Shipbuilding
Lorain, Ohio
May 1943
L6 type, S2 (frigate) type
number
7
Walter Butler Shipbuilders Inc.
Duluth, Minnesota
May 1943
C1-M type, N3 type, T1 type
number
8
Globe Shipbuilding Co.
Superior, Wisconsin
May 1943
C1-M type, V4 type, S2 (frigate) type
number
9
Great Lakes Engineering Co.
Ecorse, Michigan
May 1943
L6 type
number
10
Great Lakes Engineering Co.
Ashtabula, Ohio
May 1943
L6 type
number
11
American Shipbuilding
Cleveland, Ohio
June 1943
L6 type, S2 (frigate) type
number

Questions and formulas:
Question: What types of ships were made at the Froemming Brothers ship yard?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,A1="froemming brothers"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E11,A2:A11="froemming brothers"),4))
Level: medium
Question: What ship types were first delivered in December 1942?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:E1,C1="december 1942"),4))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:E11,C2:C11="december 1942"),4))
Level: medium