A Ketch is a boat with two masts, a mainmast and a mizzen, with th...

    The remains of a beach that was higher than the present sea level. This can be either a wave c...

    A Gaff rigged boat is a boat with a gaff. This is the diagonal spar r...

    Lateen rig is probably the oldest triangular sail used on ships, it has b...

    A Sloop is a yacht with a single headsail, as opposed to a ...

    Bermudan Rig is the most common rig today, it consists of a simple...

    A sediment is unconsolidated if the paticles are not attached together at all. As a sediment becomes more rock like it b...

    A Cutter is a single masted yacht with multiple headsails, as opp...

    The sea only errodes things efficiently at about sea level, because waves are not violent very deep. So as it errodes in...

    An environment that is found in northern Scananavia, Siberia and North America. Where the land freezes hard in the winte...

    A Schooner is a boat with two masts, a mainmast and a foremast,...

    This is a warm period between two ice ages, lasting several thousand years, technically we are in one at the present. In...

    Solifluction or Solifluxion is an errosion process that occurs in areas with a perma-frost. During the winter the whole ...

    In a climate which freezes in the winter and melts in the summer, water will run between the cracks in the rock during t...

    A Yawl is a boat with two masts, a mainmast and a mizzen, with the ...