Wheeled Scuba Tank
How long would it take a trawler to complete a journey of 167,393.671 miles (269,394 km)?
The trawler in question has the following equipment: 1998 twin 855NTA 400 hp Cummins, 5:1 Tonaco transmissions, 4 inch shafts, 54” four blade SS wheels in kort nozzles. 2006 40kw Northern lights generator, 30kw Detroit Diesel generator. All keel cooled and dry exhaust. 250 gal sewage tank with pump out. 3hp bildge pump, 1.5 hp SW washdown pump, 1.5 hp FW pump. 12V batteries, 24V batteries, 32V batteries. 3000 psi SCUBA compressor.
How many days would it take, and how many stops would it need to make to complete the journey?
yeah, you know that none of what you've obviously copy and pasted matters when measuring trip time? you need distance and speed to calculate how long to travel from point A to point B, of which you have not supplied to us thus it's impossible for us to guesstimate it. for how many stops needed, you'd need to tell us how much fuel the engine consumes per hour and how large the fuel tanks are, also impossible to guesstimate without this info. now that I've clarified this, here we go:
but let's play around with this.....I'd guesstimate 12 knots for a trawler's top speed, 41,690/11,000 liter/gallon fuel tanks and the motors burn 132.4/35.0 liters/gallons per hour, each knot is 1.8 km/hr, now we can do some math.
269,394km/1.8kmph = 149,663.33 nautical miles
149,663.33nmi/12 knots = 12471.94 hours
12471.94hrs/24hrs = 519.66 days
519.66 days or 1 year, 6 months and a few days, give or take a week if you could keep a constant pace, which you couldn't since you would need to fuel, resupply and shelter from bad weather, so I'd say more in the realm of a year and seven months to year and ten months would be a generous estimate.
for how many stops you'd need? here's my calculations:
US imperial units:
11,000 gallons/35gph = 314.285 hours of run time at 75% power(aka maximum reasonable continuous run time)
12471.94hrs(total time for entire trip)/314.285hrs(between stops) = 38
I estimate 38-40 stops during the trip, minimum. plan accordingly 
PS: there's a reason only the insanely rich and the government can plan and do these trips in comfort, they're expensive to run. imagine trying to fuel for even the lowest price in the US at the moment, $2.85/g, that's $31,350 each stop for fuel alone, not including other supplies, so the total fuel cost would be $1,191,300-$1,254,000 for fuel for the whole trip!
something I didn't think about, water. if you don't have a water maker onboard, your going to be making a lot more stops then 40 during the trip. each person on average uses 151.7 gallons of fresh water a day in the US for drinking, making food, washing themselves, for the toilet, ect. so lets apply this to your boat, 1000 gallon water capacity(says in the specs from the link below), that means you can only go 6.5 days before absolutely needing to refill the tank, for ONE PERSON! divide it by how many people onboard, you aren't going far between fillings.
PS: people, when circumnavigating the globe, you can't drive a boat through land, so you need to go around, thus lengthening the trip, come on, no one thought of that?
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