When you choose Hercules, you can be sure that not only our hatches are engineered to guarantee the highest quality, but that we offer a level of service and technical support second to none.

  • Maintenance service

  • Full technical backup and advisory service

  • Parts list and maintenance instructions

  • Spare parts available from stock by mail order

Download a guide to Care and Maintenance of Hercules Cast Hatches by clicking here

Heavy Duty Watertight Cast Deck Hatches

Cast Hatches

To find out more about our range of Watertight Cast Deck Hatches please click here


Made to Measure Hatches

To find our more about fabricated Made to Measure Hatches please click here


Service and Technical Assistance

If you already own a Hercules Hatch and need to know about Accessories, Service, Parts or Technical Assistance, please click here

                                                                                                                  Nominal sizes in Millimetres

 3D PDF Download Type Clear Opening
  Deck Cut Out 
Deck Cut Out Radius Frame Overall Fixing Details
Overall Weight
15 Ø380 Ø460 R230 Ø570 12 x M6 16kg
2020 510 x 510 590 x 590 R130 660 x 660 16 x M6 18kg
2424 620 x 620 700 x 700 R145 810 x 810 24 x M6 30kg
2515 640 x 380 715 x 460 R230 820 x 570 20 x M6 23kg
2828 710 x 710 795 x 795 R142 900 x 900 20 x M6 42kg
3628 915 x 710 1005 x 800 R150   1110 x 900 22 x M8 52kg

Click here to download a pdf of this information

Click here to download Cast Hatch Fitting guidance notes

To view or download a 3D PDF of any model simply click on the left hand image.  Download file and then view using Acrobat Reader available free here

Click here to download an Autocad drawing of all 6 cast hatches, in plan view at 1:1 scale.

All CAD files are for reference and illustration purposes only and should not be used for manufacture.