Below is company info I copied. It looks like the stuff I use. I
googled a search and I found several companies that manufacture or
distribute a similar product. Its your basic clear pvc hose with
integrated helix coil.

http://www.ajayindcorp.com/products_Suction.htm
http://www.hosexpress.com/pvchose/seriesfg.htm
http://www.hosexpress.com/pvchose/serieshjk.htm

APPLICATIONS
Marine: Resistance to Sun, weather and salt water helps it withstand
severe marine service. Ease of handling and lightweight are important
features during foul weather.

Properties:
-It is light in weight, easy to handle and yet strong
-Does not corrode or rust
-Simpler installation and lesser fittings
-Superior weathering
-Bright and attractive
-Economical - inexpensive initial cost and maintenance
-Non flammable
-Transparent: possible to observe inside conditions
-Affluent in flexibility: usable anywhere
-Superior to chemical resistance, ideal for conveyance
-Excellent in pressure and abrasion resistance, ideal for conveyance of
powder as well as fluids
-Easily Cut-able into any desired lengths

Sounds as though it would work in the bilge.
Bob