the rotation of earth causes the tide to come in and out.
the rotation of earth causes the tide to come in and out.
what causes the tide to come in and out?
the rotation of earth
Na
Na
the rise and fall of the tides could be as much as 10 m (33 ft) or 11 m (36 ft), allowing boats to harpoon bowheads at high tide in one place and dig for clams at low tide in the same spot. ships drifted with the tide during calms, raising and lowering their anchors as the tide changed. they also drifted through passages between bays when the tide was right. boats towed bowheads during fair tides but had to anchor them when the tide turned, as they couldn't stem tidal currents that could reach six or seven knots. ships could travel as far as eight miles and boats as far as ten miles with each tide. boats were left stranded on the flats and ships on sand spits, sunken rocks, and ledges at low tide only to float away at high tide. to avoid this, boats were left with a man and kept at least thirty feet from the beach; they were also hauled up past the high tide mark so they wouldn't float away as the crew slept. large numbers of bowheads were seen entering bays on the flood tide and drifting up and down bays with the tide. bowheads were towed ashore at high tide and flensed as the tide fell; schooners were also hauled ashore for the winter at high tide. among the best places to look for whales were the tide rips off cape wrangel and cape grote in academy gulf.
whaling in the sea of okhotsk