The Crystal Jewel is out of fuel, the Crystal Crown has broken down, the Crystal Cube is out of lube, etc.

Thanks Pieter and Bob for the information you have supplied. I used to get the bus from Sutton Surrey ( Green Line)and sit on the foreshore and watch the ships passing up and down the river.

Sugar Line's CRYSTAL JEWEL off Gravesend promenade, outward bound from Tate & Lyle's sugar refinery at Silvertown

Looks like Crystal JEWEL, 5082704