SOLAS requirements for totally enclosed lifeboats
By marinesafety
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COLREG requires to ensure that in restricted visibility, a vessel can produce a sound signal that is loud, clear, and durable. And vessels 20 meters or more in length, the diameter of the mouth of the bell must be at least 300 mm.
A traditional maritime instrument for Signaling, timekeeping, and safety.
| Model | B160 | B200 | B250 | B300 | B400 |
| Mouth Diameter | 160 mm | 200 mm | 250mm | 300 mm | 400 mm |
| For Ship Length | ≤12 m | 12 ~20 m | 12 ~20 m | ≥20 m | ≥20 m |
| Material | Forged Brass | ||||
| Sound Level | >110 dB | ||||
| Surface Treatment | Polished | ||||
| Approval | CCS | ||||





