Blackwatch 40 Ventilation System
Author

Marine Air Flow
CONTACT Us!
Get in touch with any questions you might have or for a quote for your own vessel.
+61 7 3523 3523
office@marineairflow.com

Marine Air Flow
CONTACT Us!
Get in touch with any questions you might have or for a quote for your own vessel.
+61 7 3523 3523
office@marineairflow.com

Project OVERVIEW
We were tasked with replacing that fashion grilles in this Blackwatch 40 with a full ventilation system including mist eliminator grilles, DC compact fans and fan speed controllers.
Project GOALS
For this project we needed to match the size and shape of the current penetrations and also match the colour accurately.
What you might not know is that here at Marine Air Flow we can retro fit both new intake grilles and fans so that not only are your water issues resolved, but your engine room will overall be much cooler as well.
The CHALLENGE
Even though Black Watch is a great sea boat, when the ocean is less than flat calm they can and usually do have quite a challenge with salt mist coming into the engine room. This can cause some increased maintenance bills and the need to replace valuable engine room equipment more often than you maybe would like.
The SOLUTION
We removed the fashion teardrop grille on the outside and added a single stage separator grille fitted in its position. We powder coated the new grille to be a perfect match to the hull colour.
For the best outcome with this particular boat, the best position for the fans is to be mounted is on the forward bulkhead as high as practical. If they are installed on a 45° mounting bracket, the discharge velocity from the fans will push the air down to the keel ensuring the engine room has great circulation.
The last item we added to this project was our manual fan speed controller. This control system results in a reduction of noise and power consumption when you turn the fans down to a lower speed. This is really helpful when trawl fishing as your engines are doing low rpm and producing minimal DC power via the alternators, but pending sounders etc you may still be pulling a lot of amps. So reducing power consumption may become essential, pending your set up.
We did manage to turn this project around in just a few weeks as we had the grilles in stock. However our lead time can be up to 12-16 weeks for custom projects, so be sure to get in touch in advance so we can be sure to provide the equipment when you need it.
Images and Drawings

Below you will find some photos of the equipment we installed, the designed air flow drawing and photos of the vessels themselves.
Equipment Supplied:
- 2 teardrop shaped Mist Eliminator Grilles,
- 2 DC compact fans (12 volt and 12" diameter)
- A compact fan mount bracket and finger safety guard
- Dc Fan Speed controller with reversing switch


Project Details
Client:
Private Client
Vessel:
Blackwatch 40
Project Overview:
Eliminate salt mist ingress that was causing damage to valuable equipment

Marine Air Flow
CONTACT Us!
Get in touch with any questions you might have or for a quote for your own vessel.
+61 7 3523 3523
office@marineairflow.com
Project Details
Client:
Private Client
Vessel:
Blackwatch 40
Project Overview:
Eliminate salt mist ingress that was causing damage to valuable equipment

Marine Air Flow
CONTACT Us!
Get in touch with any questions you might have or for a quote for your own vessel.
+61 7 3523 3523
office@marineairflow.com
Project Details
Client:
Private Client
Vessel:
Blackwatch 40
Project Overview:
Eliminate salt mist ingress that was causing damage to valuable equipment

Marine Air Flow
CONTACT Us!
Get in touch with any questions you might have or for a quote for your own vessel.
+61 7 3523 3523
office@marineairflow.com






























