This is the info from Ebay.
It contains recommendations for Motor, Battery, and prop.
I think the video is the same as JB posted.
The Kestral is a vintage style cabin cruiser wooden model boat kit made using the latest CNC machining and self-jigging construction for a fast, accurate build guided by a unique set of construction videos:
The second picture shows the parts of the boat simply slotted together, with no glue or fasteners whatsoever, to demonstrate the effectiveness of the self-jigging construction.
Length: 25" (635mm)
Beam: 8" (203mm)
Recommended Motor: 600 size brushed or equivalent brushless
Recommended Battery: 2S LiPo or 6 cell NiMh
Recommended prop: 40mm diameter 3 blade brass prop.
Recommended rudder servo: Pre-cut trays are included for both Hitec HS225BB and Etronix ET2015
The kit contains over 100 precision CNC cut plywood parts, all strip-wood and dowels.
Deck planks are routed for a realistic appearance, not just scorched like laser kits.
Pre-drilled mountings are included for various motor options.
CNC routed plastic windows are included for ease of assembly.
Includes a fitted stand with rope handles and protective felt strip.
Includes a wooden ship's wheel, quality nickel plated cleats and clevises and a turned brass ships horn.
Includes a brass rudder and tiller assembly and ready-made servo linkage.
Includes a quality stainless steel and brass prop-shaft with glass cloth to secure it.
Includes a custom made water scoop and outlet with hose for a realistic jet of water when the boat is under way, can also be used to cool the ESC or motor if required (longer hose will be needed).
Other parts will be needed to complete the model as shown, a full list of the kit contents is at the address below, note the lights and prop shown on the prototype are not included in the kit.
We've produced a comprehensive series of videos that detail the entire construction of the model, there's no need to interpret cryptic plans or follow incoherent instructions leaflets, it's all there in the videos to watch.