They look simple—just metal and chain—but anchors are feats of hidden engineering. From ancient stone weights to the colossal anchors of ocean liners, discover how their design grips the seafloor and ...

Johns Hopkins APL has installed a state-of-the-art robotic arm to advance repair and manufacturing for the maritime ...

With a bilge pump, a float switch and a little ingenuity, you can build your own working shower drain for less than $100. The ...