Is the Fleet Shrinking?

I got curious and did a small survey of the fleet size using resources I had at hand (that’s why I used 1982 instead of the more logical 1980). So here is a comparison of the  fleet composition in 1982, 1990, 2000, and 2010 with some notes about the future. To make the information more meaningful, I have grouped the ships in categories by displacement and provided subtotals of all the ships in that category or larger. There is a more specific evaluation of patrol vessels near the bottom.  My sources are at the foot.

(note: loa is length over all.  tons (fl) is full load displacement)

Type         Class               loa    tons (fl)      1982    1990    2000    2010

WAGB     Healy              420    16,000          –           –             1           1
WAGB     Polar               399    12,087           2          2            2           2
WAGB     Glacier            310      8,449           1           –            –            –
——————————————————————————————————-
=> 8,000 tons                                                  3         2           3           3
——————————————————————————————————-
WAGB     Wind               269      6,515            2          –             –            –
WAGB     Mackinaw      290      5,252             1          1            1            –
WMSL     Bertholf          418      4,306              –          –            –            2
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