Visual meaning of 'a1'? - learn with images, example in daily life

Visual illustration of a1: First rate or excellent

adjective

First rate or excellent

"Her presentation was a1; everyone was impressed by her research and delivery. "

quality achievement value

Visual illustration of a1: (of a ship) in first class condition

adjective

(of a ship) in first class condition

"After a complete overhaul and fresh paint, the Sea Serpent was declared A1, ready for another season of voyages. "

nautical condition sailing