Used IMO type-approved marine speed log systems — both Doppler and electromagnetic — from Furuno, Skipper, Consilium and JRC. Each unit is calibrated and bench-tested before dispatch.
We stock both. Doppler logs (Furuno DS-80, Skipper DL850) measure absolute ground speed; electromagnetic logs measure water speed.
Yes — units retain IMO/IEC 61023 type-approval.