Author: Peter Knego, Special to USA TODAY

The Sea Cloud II boasts 1930s-themed interiors that are infused with warm wood tones, brass, etched glass and period-style fittings.

The Seabourn Sojourn provides an inclusive cruise experience with an impressive crew-to-guest ratio.

The Scenic Eclipse features its own helicopters and a submarine, in addition to the usual armada of zodiacs, kayaks and e-bikes.

Oceania Cruises 1998-built Insignia is the first of the line’s quartet of nearly identical regatta class ships to receive a stem-to-stern makeover.

The 92,000 gross ton, 2,081-guest Queen Elizabeth is the newest of three cruise ships in the Cunard Line fleet.

Christened by Princess Diana and featured in “The Love Boat,” Phoenix Reisen’s Artania is now one of the oldest active cruise ships in the world.

The Volendam may lack some of the bells and whistles of Holland America’s newer ships, but it offers an intimate, traditional cruising experience.