Table:
0
A
B
C
D
E
F
G
1
Ship
Builder
Namesake
Renamed
Laid down
Launched
Commissioned or completed(*)
2
Ajax
Snowden & Mason, Pittsburgh, Pennsylvania
Manayunk, Philadelphia
Manayunk, 1862; Ajax, 15 June 1869
1862
18 December 1864
27 September 1865*
3
Canonicus
Harrison Loring, Boston, Massachusetts
Canonicus
Scylla, 15 June 1869; Canonicus, 10 August 1869
1862
1August1863
16 April 1864
4
Catawba
Alexander Swift & Company, Cincinnati, Ohio
Catawba River
Atahualpa
1862
13 April 1864
10 June 1865*
5
Mahopac
Secor & Co., Jersey City, New Jersey
Lake Mahopac
Castor, 15 June 1869; Mahopac, 10 August 1869
1862
17 May 1864
22 September 1864
6
Manhattan
Perine, Secor & Co., Jersey City, New Jersey
Manhattan Indians
Neptune, 15 June 1869; Manhattan, 10 August 1869
1862
14October1863
6 June 1864
7
Oneota
Alexander Swift & Company, Cincinnati, Ohio
Oneota Tribe of the Sioux Indians
Manco Cápac
1862
21 May 1864
10 June 1865*
8
Saugus
Harlan & Hollingsworth , Wilmington, Delaware
Saugus, Massachusetts
Centaur, 15 June 1869; Saugus, 10 August 1869
1862
8 February 1864
27 August 1864
9
Tecumseh
Charles Secor & Co., Jersey City, New Jersey
Tecumseh
Not Applicable
1862
12 September 1863
19 April 1864

Questions and formulas:
Question: When was the ship launched when the commissioned or completed(*) is 6 june 1864?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,G1="6 June 1864"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,G2:G9="6 June 1864"),6))
Level: medium
Question: When was the ship tecumseh launched?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,A1="Tecumseh"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,A2:A9="Tecumseh"),6))
Level: medium
Question: What is the namesake of the ship that was commissioned or completed(*) 16 april 1864?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:G1,G1="16 April 1864"),3))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:G9,G2:G9="16 April 1864"),3))
Level: medium
Question: What is the minimum laid down?
Formula: MIN(E1)
Formula2: MIN(E2:E9)
Level: easy