This file is indexed.

/usr/share/games/openssn/data/ships1.dat is in openssn-data 1.4-1build1.

This file is owned by root:root, with mode 0o644.

The actual contents of the file can be viewed below.

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0 1 1 5 47 270 150000 150000 75.0 
1 4 2 20 0 90 160000 151000 115.0 Convoy
1 4 2 20 0 90 160000 149000 115.0 Convoy
1 4 2 20 0 90 161000 149000 115.0 Convoy
1 4 2 20 0 90 162000 149000 115.0 Convoy
1 4 2 20 0 90 160000 152000 115.0 Convoy
1 4 2 20 0 90 161000 152000 115.0 Convoy