Gawkers and true seafarers alike are welcome at the Baltimore Boat Show, an annual cavalcade of holy-shit-that’s-expensive aluminum and fiberglass fantasy. But even if you’re not in the market for a new Carver or Bayliner, you can delight in the Swampmaster gator show or drink up Cap’n Dave Marciano’s “Wicked Tuna” tales (nonsexual). There are also practical motor maintenance tips for DIY-ers, toy boats, and the inevitable crab-picking contest. And it’s warm in there. (Edward Ericson Jr.)