Originally Posted by Utahsailor
Planning to install a second float switch a few inches above the present one for a second bilge pump.
1. Is there a problem sharing the present outflow line between the two pumps
2. recommendations for bilge pumps
3. An alarm will be added to the second switch, recommendations?
4. Does anyone have experience with a simple cell based alerting system for this and other security
Sorry for the blizzard of questions but last few weeks have been heavy work weeks.
Hi Utah Sailor,
Some quick responses sharing what we chose to do based on past experience in several cruising sailboat:
1- Sharing discharge line: Don't. You are inviting problems and reduced flow. Run separate, appropriately sized discharge lines for each pump.
2- Pumps: We use the Whale SuperSub
automatic pumps for our maintenance
pumps [i.e., keep the bilge dry..] They have proved to be very dependable, leave only a 1/4" of water remaining, and don't generate any noticeable IR on the radios...
We also put a simple counter on our primary bilge pump and that count gets recorded in the daily log...
If you don't use an automatic bilge pump as your primary, you may want to consider installing a delay circuit so the pump doesn't cycle on and off in a lumpy anchorage... [i.e., a simple 15 second delay works wonders on the float style pumps. The CruzPro EFS20
has this capability and more built in to their bilge pump monitoring device...]
Secondary pump(s)- use the biggest you can afford, or two... or three...
If going offshore
, consider a crash pump: you only need it once...
3- Alarm; something that is too loud. We have our high-water alarm on a deafening piezo unit inside the boat, and it is also connected to the airhorn to alert fellow cruisers and us on shore... [if anyone is within earshot...] ALWAYS make sure you can mute alarms. Once you are alerted they have served their purpose and from then on only interfere with communications
during a time you can least afford it.
System: Last year I installed the cell based system from Siren Marine
because we had to unexpectedly leave the boat over winter to tend to land based responsibilities elsewhere... It saved the day a couple of times [blog references
below...] Great unit, lots of features, remotely programmable, and excellent customer service
... The provided SIM card works in 180 countries... Details about the choice and installation
are in this blog post
. If you are interested, you can read about how it already paid for itself in this post
Have fun with your projects. They are all worthwhile...