Shadow Sector - Furuno 1835 Operator's Manual

2.2.4

Shadow sector

Funnels, stacks, masts, or derricks near the antenna interrupt the radar beam, and a
non-detecting sector can occur. Targets can not be detected within this sector.
Radar position
Large ship
Wharf and its echo
Shadow sector
occurs because
wharf is hidden
behind ship.
Shadow sector
Radar position
Size of blind sector depends
on size of obstruction and range.
2. DESCRIPTION OF RADAR
Wharf and its echo
Shadow sector occurs
because obstruction
(like mast) is in path
of radar beam.
2-5