boat hull, bulbous bow, ships, waterline, displacement hull, low pressure zone, bow wave, drag reduction, Tamron 18-270mm, Sony DSLR A580

boat hull, bulbous bow, ships, waterline, displacement hull, low pressure zone, bow wave, drag reduction, Tamron 18-270mm, Sony DSLR A580
boat hull, bulbous bow, ships, waterline, displacement hull, low pressure zone, bow wave, drag reduction, Tamron 18-270mm, Sony DSLR A580
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