According to 46 CFR §183.330, which of the following statements regarding the physical construction of a vessel's switchboard is correct?

1. A. Switchboards must be of the open-front type to allow rapid access to bus bars during normal operations
2. ✓ Switchboards must be totally enclosed, of the dead front type, and fitted with a dripshieldCorrect
3. C. Switchboards must be fitted with a dripshield but may be of the open-front type if located below the waterline
4. D. Switchboards must be totally enclosed and of the dead front type, but a dripshield is only required if located on an exposed deck