In which waters are there no constrained by draft, lights, or day shapes requirements?

In the context of navigation and the International Regulations for Preventing Collisions at Sea (COLREGs), the term "constrained by draft" refers to vessels that are restricted in their ability to change course due to the depth of water or their own draft. The specific requirements regarding lights and day shapes apply to vessels that are constrained by draft to indicate their status to other mariners.

In inland waters, there are typically no stringent requirements dictating the display of lights or day shapes for vessels that are not constrained by draft. This is because inland waterways generally involve a different set of navigation rules compared to open ocean or coastal waters, which are governed by COLREGs. In these areas, vessels can often operate with fewer restrictions, and the lack of specific requirements for lights or day shapes reflects the varied types of vessels and operation conditions typically found there.

In contrast, open ocean, coastal waters, and offshore waters may impose more stringent regulations regarding navigation lights and day shapes for vessels, as the possibility of encountering large vessel traffic and the risk of collisions necessitate clearer signaling methods.

Therefore, the correct answer is that inland waters are not subject to the same constrained by draft, lights, or day shapes requirements, making navigational procedures less complex compared to other