Table:
0
A
B
C
D
E
F
1
Name
Pennant
Builder
Laid Down
Launched
Commissioned
2
Caprice (ex-Swallow)
R01 later D01
Yarrow , Scotstoun
24 September 1942
16 September 1943
5 April 1944
3
Cassandra (ex-Tourmaline)
R62 later D10
Yarrow, Scotstoun
30 January 1943
29 November 1943
28 July 1944
4
Caesar * (ex-Ranger)
R07 later D07
John Brown , Clydebank
3 April 1943
14 February 1944
5 October 1944
5
Cavendish * (ex-Sibyl)
R15 later D15
John Brown, Clydebank
19 May 1943
12 April 1944
13 December 1944
6
Cambrian (ex-Spitfire)
R85 later D85
Scotts , Greenock
14 August 1942
10 December 1943
17 July 1944 by John Brown
7
Carron (ex-Strenuous)
R30 later D30
Scotts, Greenock
26 November 1942
28 March 1944
6 November 1944
8
Cavalier (ex-Pellew)
R73 later D73
White , Cowes
28 February 1943
7 April 1944
22 November 1944
9
Carysfort (ex-Pique)
R25 later D25
White, Cowes
12 May 1943
25 July 1944
20 February 1945

Questions and formulas:
Question: when was the destroyer launched when it was laid down on 14 august 1942?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="14 august 1942"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F9,D2:D9="14 august 1942"),5))
Level: medium
Question: what is the launched date when the builder is john brown, clydebank?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="john brown, clydebank"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F9,C2:C9="john brown, clydebank"),5))
Level: medium
Question: what is the pennant when the builder is yarrow, scotstoun?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="yarrow, scotstoun"),2))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F9,C2:C9="yarrow, scotstoun"),2))
Level: medium
Question: what is the name when the laid down is 28 february 1943?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="28 february 1943"),1))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F9,D2:D9="28 february 1943"),1))
Level: medium
Question: when was it commissioned when the destroyer was built by scotts, greenock?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,C1="scotts, greenock"),6))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F9,C2:C9="scotts, greenock"),6))
Level: medium
Question: when was the launched date when the laid down date is 14 august 1942?
Formula: UNIQUE(CHOOSECOLS(FILTER(A1:F1,D1="14 august 1942"),5))
Formula2: UNIQUE(CHOOSECOLS(FILTER(A2:F9,D2:D9="14 august 1942"),5))
Level: medium