Who owned these 1920s launch photos?

Can we work out who owned these photos? Here are the clues so far...

What: All the photos are connected with this launch, named Paula:

The seller didn't keep any of the photos' captions, but I think this was taken off Cheung Chau. The house in the background looks like one of the pre-WW2 houses in the south of the island [1].

When: No doubt about the location for the next one, the Repulse Bay Hotel [2] is plain to see in the background.

Over at the left edge of the photo they're putting the roof on the hotel's new garage.

The garage building was completed in 1921 [3], giving us the date for the set of photos.

Where: The earliest photos in the set show the launch under construction. By this stage all the woodwork is done, but it is still waiting for a paint job and a propeller:

We've seen that building on the hilltop before:

The HKCYC building in this photo housed the Corinthian Yacht Club [4], which we know was east of A. King's slipway [5]. A. King was a well-known boat-builder in Hong Kong.

Comparing the views of the house on the hill, the photo of Paula on the slip was taken a short distance west from the HKCYC. So was the Paula built at A. King's? Then it's a long shot, but do any records of boats built at A. King's still exist?

Who: This couple appear in several photos:

Assuming they're the owners, there's a good chance the boat is named after the lady. Looking at the lifebuoy, there's an even better chance they're American:

Then how about the pennant with the letter "D"? There's a small one on the lifebuoy, and a larger one on the back of the boat. It could be the flag of the shipping line they worked for? Or their private flag, with letter D for their surname?

Any guesses as to their identity? Or can you spot any other clues that will help?

These photos are part of the new Harbour-themed talk [6]. Im looking forward to giving the talk this Wednesday to members of the Royal Hong Kong Yacht Club and their guests.

Regards, David

References:

1. Cheung Chau's European Reservation: http://gwulo.com/node/12725
2. The Repulse Bay Hotel: http://gwulo.com/the-repulse-bay-hotel
3. Completion date for the Repulse Bay Hotel garage: http://gwulo.com/comment/33962#comment-33962
4. Hong Kong Corinthian Yacht Club: http://gwulo.com/Hong-Kong-Corinthian-Yacht-Club
5. HKCYC east of Ah King: http://gwulo.com/atom/13832
6. Talk #3: http://gwulo.com/gwulo-talk-3