How many ship nation grand total 20?
NATO member Aircraft carriers Battleships Cruisers Escorts Submarines Torpedo boat squadrons s Motor ship / s Naval trawler Grand Total
Exercise Mainbrace
11599375
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2-11599375-1
Force composition
Naval Forces - Operation Mainbrace, 1952[ 
 citation needed 
 ]
United States 6 1 3 40 9 — — 59
UK 3 1 2 31 17 4 8 + Trawlers 66
Canada 1 — 1 5 — — — 7
France — — — 7 — — 2 20
Denmark — — — 3 2 — — 7
Norway — — — 2 2 3 3 26
Portugal — — — 3 — — — 3
Netherlands — — — 5 3 — 5 13
Belgium — — — — — — — 2
TOTALS: 10 2 6 96 33 7 18 203
SELECT s Motor ship / s Naval trawler FROM table WHERE Grand Total = 20
20