Just seen two ad for a kit and part completed Crash tenders. Can't find the Item numbers but they are In the Toys & Games/Radio Controlled/Boats and Hovercraft.
One listed as: KeilKraft / Aerokits Vosper High Speed RAF Crash Rescue Tender kit - seem complete and Includes the original Yeoman casting fitting kit
the other: VINTAGE VOSPER WOODEN MODEL BOAT RC RAF CRASH TENDER.
Worth a look for all you Fireboat buffs!