"weather tight" vs "water tight" hatches

[MiddlepointBight]

Looking to replace some 13x23 cockpit deck hatches, and seeing in Western and Land & Sea that some hatches are "weather tight" and some are "water tight".

Google is saying that weather tight hatches/doors are designed to withstand water pressure from one side (the outside), and water tight hatches/doors are designed to withstand water pressure from both sides.

Given that these are cockpit hatches and above waterline - assuming I'm okay with weather tight? Hatches store batteries (2 main 1 house) and oil reservoir. So need them to stay dry on inside.

TIA for help.

Looking at either of these hatches, which are both weather tight:

Access Slam Boat Hatches – Store – TEMPRESS

The TEMPRESS Line Of Marine Access Hatches are as functional as they are stylish. The Access Slam Boat Hatch is made from a glass filled polypropylene, for strength and durability. All Access hatches are designed for heavy traffic areas, and will withstand people walking or standing…

tempress.com

Access Cam Boat Hatches – Multiple Sizes – Store – TEMPRESS

The TEMPRESS Line Of Marine Access Hatches are as functional as they are stylish. The Access Cam Boat Hatch is made from a glass filled polypropylene, for strength and durability. All Access hatches are designed for heavy traffic areas, and will withstand people walking or standing upon…

tempress.com

 

[Whole in the Water]

If you get into trouble and get swamped with water and do not want them to fill with water then I would go with watertight. If not, weather tight can do but may not keep water out if exposed to water for longer periods.