The name of Lord Blakeney's yacht is the Day Dream. The first mention of the yacht is in Chapter Three, when Mr. Jellyband informs Lord Anthony that Lady Blakeney's brother, Armand St. Just, will travel to France on the Day Dream.

In Chapter 21, the yacht is described as a 'strong, well-built sea-going' sailboat, and in Chapter 28, we receive the impression that the Day Dream isn't Lord Blakeney's only yacht. Lady Blakeney describes the boat as 'Percy's favorite yacht.' The boat is what she spies in the distance as she waits to warn her husband and his friends of their danger. To Marguerite Blakeney, the boat is the symbol of 'joy and hope' and the one vehicle which will transport her back to her beloved England, 'the land of liberty and of hope.'

After her husband manages to foil the inimitable Chauvelin and to rescue her, Lady Blakeney is carried onto the luxurious yacht. There, Lord Blakeney is able to change into the 'sumptuous clothes' he keeps on hand in his yacht.