Well at least we have plenty of numbers to work with to try and figure out value. So assuming a 42 year working life for the refit engine, same as the last engine. 700 1 hour tours per year. So that is 29,400 hours on the water. Lets guess that the new diesel is the best of the best and uses 1 gph to push a 73 foot boat. The cost for fuel alone at todays prices would be: 29,400 hours X $4 per gallon equaling $117,600 dollars in fuel cost savings if run 100% of the time on electric. Which should not be unexpected given it usage cycle of 2 1 hour tours a day. And that electricity would cost pennies on the dollar, and pay for itself in savings by not needing as many engine oil changes.
So if they spend all the $500,000 on the electric refit that would be a lose to tax payers to the tune of $400,000 dollars. Assuming the value of not burning 29,000 gallons of fuel is worth nothing (No carbon credit taxing is ever implemented, the value of cleaner air is nothing, and diesel aways cost the same amount.)
One the other hand if they spend around $100,000 to go electric, they would save money. (Assuming electricity rates stay the same relative to diesel.)
Now being slightly more realistic the maintenance cost on the diesels is probably going to be much much higher then the electric. So The real savings would be more. How much would be hard to say with out knowing the maintenance history of the old diesel. And the likely price increase of diesel fuel cost over the next 40 years. Lets say the real savings of electricity over diesel for this boat might be in the $500,000 dollar range. But that assumes the average cost of diesel for the next 40 years is at least double or triple what it is now.
So lets hope they can get the electric refit done for $500,000 (no cost over runs) and the average fuel cost triples. Then money wise this refit will be a wash cost wise. This also assuming they don't decommission this boat two years from now!
On Feb 5, 2012, at 3:42 AM, Eric wrote:
Purchased by the Port in 1988, the 73-foot Angelena II is used to highlight the capabilities of the Port facilities with customers, constituents, public leaders, foreign dignitaries, media and stakeholders. The Port provides several hundred tours annually on the Angelena II, which takes a maximum of 40 guests for 60- to 90-minute tours that highlight the value of the Port. In 2011, the Port hosted more than 4,000 visitors on Angelena II tours. 42-year-old harbor tour boat.
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