BrickLink - Part 48064c01 : LEGO Electric, Motor with Boat Propeller and Rudder 14 x 4 x 4, 3-Blade Propeller [Electric, Motor] - BrickLink Reference Catalog
Lego Set Number 4011, Cabin Cruiser, Produced in 1991 | eBay
LEGO 4011: Cabin Cruiser | Brickset: LEGO set guide and database
Lego Set Number 4011, Cabin Cruiser, Produced in 1991 | eBay
LEGO 4011 Cabin Cruiser Set Parts Inventory and Instructions - LEGO Reference Guide