Table:
0
A
B
C
D
E
1
Date
Ship
Type
Nationality
Tonnage GRT
2
11 Jan 16
Corbridge
Cargo ship
United Kingdom
3,687
3
11 Jan 16
Farringford
Cargo ship
United Kingdom
3,146
4
13 Jan 16
Dromonby
Cargo ship
United Kingdom
3,627
5
13 Jan 16
Author
Cargo ship
United Kingdom
3,496
6
13 Jan 16
Trader
Cargo ship
United Kingdom
3,608
7
15 Jan 16
Ariadne
Cargo ship
United Kingdom
3,035
8
15 Jan 16
Appam
Cargo ship
United Kingdom
7,781
9
16 Jan 16
Clan McTavish
Cargo ship
United Kingdom
5,816
10
22 Jan 16
Edinburgh
Sailing ship
United Kingdom
1,473
11
4 Feb 16
Luxembourg
Cargo ship
United Kingdom
4,322
12
6 Feb 16
Flamenco
Cargo ship
United Kingdom
4,540
13
8 Feb 16
Westburn
Cargo ship
United Kingdom
3,300
14
9 Feb 16
Horace
Cargo ship
United Kingdom
3,109
15
24 Feb 16
Maroni
Cargo ship
France
3,109
16
25 Feb 16
Saxon Prince
Cargo ship
United Kingdom
3,471

Questions and formulas:
Question: what is the nationality of the ship appam?
Formula: FILTER(D1,B1="appam")
Formula2: FILTER(D2:D16,B2:B16="appam")
Level: easy
Question: what is the tonnage grt of the ship author?
Formula: FILTER(E1,B1="author")
Formula2: FILTER(E2:E16,B2:B16="author")
Level: easy
Question: what is the most tonnage grt of any ship sunk or captured on 16 jan 16?
Formula: MAX(FILTER(E1,A1="16 jan 16"))
Formula2: MAX(FILTER(E2:E16,A2:A16="16 jan 16"))
Level: easy
Question: what is the total tonnage grt of the cargo ship(s) sunk or captured on 4 feb 16?
Formula: ROWS(FILTER(E1,(C1="cargo ship")*(A1="4 feb 16")))
Formula2: ROWS(FILTER(E2:E16,(C2:C16="cargo ship")*(A2:A16="4 feb 16")))
Level: easy