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Thunder Jet 20 Chinook OS keeps an estimated 74% of its value after 5 years — #1002 of 5780 boats VINdown tracks. See the full depreciation curve.
Per VINdown's modeling, the Thunder Jet 20 Chinook OS retains an estimated 74% of its value after five years, ranking #1002 of 5780 boats we track. That is 8 points above the 66% five-year average for Bowrider in its class, so it holds value better than most rivals.
Most of the loss lands early: the Thunder Jet 20 Chinook OS sheds about 12% of its value in year one alone. From roughly $48,785 it falls to around $36,247 by year five — a five-year loss near $12,538, about $6.87 a day in depreciation.
Because the steepest drop hits around year 2, a lightly-used Thunder Jet 20 Chinook OS bought at 2 years old lets the first owner absorb the worst of the depreciation while the curve flattens — usually the value sweet spot. Explore the full year-by-year curve, trims, and true cost of ownership in the Model Lab above.
It keeps an estimated 74% of its value after five years — better than most among the 5780 boats VINdown tracks (ranked #1002).
From about $48,785 when new it drops to roughly $36,247 after five years — a loss near $12,538 (74% of its value retained).
Around 2 years old: that is just past the steepest depreciation, so you skip the biggest drop while the value curve is flattening.