Observed arrival · 2026-10-25
Propelmar’s propeller calculator for Paita fishing boats
A marine propeller service for Paita’s pot-fishing fleet, with a calculator that estimates propeller fit and potential fuel savings.
○Open
⊠Login
$Paid
†Ads
✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Paita potera boat owners and operators
- Worth noticing
- The estimate uses the Gerr method and is explicitly provisional; a dockside measurement is meant to confirm it.
Field notes
The calculator asks for the engine’s rated and loaded RPM, gearbox reduction, current propeller dimensions, GPS speed, and trip-level fuel use. It estimates mismatch and possible fuel savings, but labels the result a desk estimate using the Gerr method. The page says a dockside measurement can confirm the figures without hauling the boat out, after which the foundry receives a propeller specification.
Observed signals
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Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
$PaidCommerce or pricing visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
◉HumanPersonal, local, civic, or handmade
One card from the complete issue