SONAR DOME. THIS PRODUCT IS A BOW MOUNTED SONAR DOME WHICH IS FITTED ONTO THE HULL OF A SHIP. IT ACTS AS PROTECTION FOR THE SHIPS SONAR SYSTEM, AND IS THEREFORE CONSIDERED A SPECIALISED PART. THE DOME IS CONSTRUCTED FROM GLASS REINFORCED PLASTIC (GRP) WHICH COMPRISES INDIVIDUAL LAYERS OF WOVEN GLASS STRANDS, HELD TOGETHER BY AN EPOXY RESIN MATRIX. THE DOME IS CONSTRUCTED BY LAMINATING LAYERS OF THE GLASS MATERIAL INTO A MOULD AND SUBJECTING THE STRUCTURE TO GRADUAL ELEVATED TEMPERATURES. THIS CURES AND HARDENS THE RESIN SYSTEM PRIOR TO REMOVAL FROM THE MOULD.

CLASSIFICATION IS DETERMINED ACCORDING TO GIRS 1 AND 6. TARIC CODE 9014900090 INCLUDES OTHER THAN OF INSTRUMENTS OF SUBHEADINGS 901410 AND 901420 FOR USE IN CIVIL AIRCRAFT. NOTE 2(B) TO CHAPTER 90 APPLIES.