CeeBee
Senior Member
- Joined
- Mar 1, 2014
- Messages
- 123
- Location
- USA
- Vessel Name
- Emily B
- Vessel Make
- Beneteau Swift Trawler 44'
A quick note that is hopefully helpful not only to other Beneteau Swift Trawler owners but others as well. The damage that can be caused with the lack of bonding of the thru hulls to a proper ground became very apparent while the boat was in Marina Del Rey where we left the boat for three months this summer during our California coastal trip.
There was excessive electrolysis damage to the packing gland raw water intakes (one literally fractured with just a hand) as well as the start of damage to all of the thru hulls which we since tied all of them with a bonding wire to a block that was then tied to the stern zinc plate. You can see the before and after shots of the engine room thru hulls and the significant amount of electrolysis in a short two month period.
There was excessive electrolysis damage to both the port and stern raw water intakes which we have replaced. The original ones are constructed with different grades of copper one being much softer and as such it received a great deal of damage.(see image). The port water intake literally broke off with just the pressure from a hand.
There is a lot of electronics and as such a significant amount of current running through the boat. The fix was fairly simple but critically important for everyone to check and think about.
Images are:
Shot of the internal electrolysis damage to the packing gland raw water intake
Engine room thru hulls (before and after)
The bonding block we contructed with bonding wire running from all of the thru hulls.
CB
There was excessive electrolysis damage to the packing gland raw water intakes (one literally fractured with just a hand) as well as the start of damage to all of the thru hulls which we since tied all of them with a bonding wire to a block that was then tied to the stern zinc plate. You can see the before and after shots of the engine room thru hulls and the significant amount of electrolysis in a short two month period.
There was excessive electrolysis damage to both the port and stern raw water intakes which we have replaced. The original ones are constructed with different grades of copper one being much softer and as such it received a great deal of damage.(see image). The port water intake literally broke off with just the pressure from a hand.
There is a lot of electronics and as such a significant amount of current running through the boat. The fix was fairly simple but critically important for everyone to check and think about.
Images are:
Shot of the internal electrolysis damage to the packing gland raw water intake
Engine room thru hulls (before and after)
The bonding block we contructed with bonding wire running from all of the thru hulls.
CB