This is an orginal Flite part.
The Radio Active Ships Horn with dimensions of 5mm L and 12mm would be the best fit for speakers or sound systems found on large vessels or ships.
Radio Active Ships Horn ?�:6mm L:20mm(Pk2) RMA62107
Radio Active Ships Horn ?�5mm L:15mm(Pk2) RMA62103
Radio Active Ships Horn ?�:7mm L:22.5mm(Pk2) RMA62109
Radio Active Ships Horn ?�:3.5mm L:11mm(Pk2) RMA62101
Radio Active Rigging Bowsie 3 hole BLACK RMA3090B
Radio Active Fixed Turnbuckle, 13x25mm (pk2) RMA645225