Round boat access / inspection hatch (black). These hatches are made of tough, UV-resistant ABS plastic and are suitable for external use (but not below the waterline as they are not designed to hold water in/out).
eBay
ABS Deck Access Hatch Cover, Waterproof, Anti-UV, Non-Skid Inspection, Marine Boat, Yacht,
Aliexpress UK
Marine Access Square Hatch with Lock Hatch Include Waterproof Red Bag. 1 Marine Deck Square Hatch And Red Waterproof Bag. Features: 90-degree locking hinges. Type: Access Hatch. Colour: Black. The Square hatche are made for floor mounting due to low-profile design.
eBay
Marine Deck Access Hatch - Rectangular Deck Cover, Inspection Hatch, Hatch Cover, Boat Access
Aliexpress UK
【Waterproof Design】When it rains or washes the vehicle, the waterproof door can drain quickly, prevent rainwater from entering the hatch. 【Application】RV Boat Electrical Access Door suitable for refitting ports, water inlets, and inspection ports for RV trailers, yachts, etc.
eBay
1pc Access Panel Inspection Hole PVC Access Doors Wall Ceiling White Hatch Cover Universal Plastic
Aliexpress UK
Elegant 300x300mm Aluminium Access Panel. For those who demand elegance and functionality, the Elegant 300x300mm Aluminium Access Panel is the ultimate solution. Seamlessly integrate style and functionality into your ceilings with our elegantly designed access panel.
eBay
Removable Hinged Access Hatch White Plastic Opening Flap Cover Plate Inspection Hole ABS Access
Aliexpress UK
When open, the lid is secured by a strap to prevent losing overboard. Molded Polypropylene Deck Plates are 'Acetone' proof. Nuova Rade Plastic Flush Mount Fishing Rod Holder with Cap Yacht Boating J77 J7.
eBay
Door Latch White Access Panel Door Plastic Removable Inspection Hole ABS Access Hatch Cover Doors
Aliexpress UK
Screw turning lock, 100% watertight, fitted with rubber O-RING. Item Colour External Ø mm Opening Ø mm 20.204.00 White 147 102 20.206.00 White 172 125 20.205.00 White 205 152 20.207.00 White 260 203 20.204.20 Black 147 102 20.206.20 Black 172 125 20.205.20 Black 205 152 20.207.20 Black 260 203 20.204.01 Clear 147 102 20.206.01 Clear 172 125 20.205.01 Clear 205 152 20.207.01 Clear 260 203.
eBay
1pc Self-adhesive Access Panel Inspection Hole ABS Access Doors Wall Ceiling White Hatch Cover
Aliexpress UK
【Waterproof rectangular design】: Rectangle Boat Hatch and Lid, Waterproof rectangular deck cover, suitable for all kinds of boats and yachts, suitable for indoor and outdoor use. 【ABS material】: Marine Deck Access Hatch is made of ABS material, which is strong, waterproof and has a non slip surface design.
eBay
Universal White Access Panel Door Plastic Removable Inspection Hole High Quality ABS Access Hatch
Aliexpress UK
1 circular inspection hatch access hole. It can be easily secured to the boat deck, providing a watertight seal. Multi-Purpose Use: Suitable for various applications, this hatch can be used on boats, yachts, or other marine vessels.
eBay
1pc Access Panel Inspection Hole PVC Access Doors Wall Ceiling White Hatch Cover Universal Plastic
Aliexpress UK