- Sill hatches are designed with a coaming.
- The radius of the hatch coaming is 50 mm or larger.
- The height of the hatch coaming is variable.
- Outside operating handles can be designed as separate keys.
- Sill hatches can be designed as a so-called low profile hatch. These hatches have a very low coaming and a rising slope. They can be used as raised flat deck hatches. With this, the problem of brackish water in the edge of the hatch coaming is prevented