Belts and Suspenders
Jul. 2nd, 2005 11:39 amHeinlein often wrote about "belt and suspenders" people, those that felt backup systems to be mandatory. If one fails, you always have the other, and, by implication, your ass is always covered. A few months ago, a friend and I reached disagreement over that philosophy, specifically on how much coverage one ass needed.
He briefly served as captain to a classic yacht (that shall remain nameless, even though it's a pretty cool boat). This is no mere pleasure boat. 90 feet long, wooden hull, built in 1929. A gorgeous boat, but, like anything old, updated with not enough attention to holistic detail.
When it was first built, I imagine it needed an engineer in the engine room at all times maneuvering was a requirement. Back before hydraulics, many boats were equipped with direct reversible engines. You want to move ahead? Start the engine. Reverse? Stop the engine, reverse the cams for the valves, and restart, in reverse. No disconnect between the engine and the prop shaft, and the entire process manually enabled from the engine room.
The new incarnation avoided the ugly buggaboo of the engine that wouldn't start in time (crashing into something, often at high speeds, was a common cause of marine mishaps, often due to an inability to restart in the proper direction). Much newer, smaller and more reliable engines had replaced the mammoth monsters of the past. A pneumatic shifter now directly engaged, reversed and -- importantly for this entry -- disengaged the transmission. The captain didn't have that panic in his gut, that creeping wonder if the engineer was in the head or asleep. He could simply reverse thrust, and hopefully the course of the vessel, himself, thanks to pressurized air.
After my buddy left the boat another captain got a chance to drive a tour. To save money, the owners didn't give the captain his regular deckhand/engineer.
Big mistake. ( Really big mistake. )
He briefly served as captain to a classic yacht (that shall remain nameless, even though it's a pretty cool boat). This is no mere pleasure boat. 90 feet long, wooden hull, built in 1929. A gorgeous boat, but, like anything old, updated with not enough attention to holistic detail.
When it was first built, I imagine it needed an engineer in the engine room at all times maneuvering was a requirement. Back before hydraulics, many boats were equipped with direct reversible engines. You want to move ahead? Start the engine. Reverse? Stop the engine, reverse the cams for the valves, and restart, in reverse. No disconnect between the engine and the prop shaft, and the entire process manually enabled from the engine room.
The new incarnation avoided the ugly buggaboo of the engine that wouldn't start in time (crashing into something, often at high speeds, was a common cause of marine mishaps, often due to an inability to restart in the proper direction). Much newer, smaller and more reliable engines had replaced the mammoth monsters of the past. A pneumatic shifter now directly engaged, reversed and -- importantly for this entry -- disengaged the transmission. The captain didn't have that panic in his gut, that creeping wonder if the engineer was in the head or asleep. He could simply reverse thrust, and hopefully the course of the vessel, himself, thanks to pressurized air.
After my buddy left the boat another captain got a chance to drive a tour. To save money, the owners didn't give the captain his regular deckhand/engineer.
Big mistake. ( Really big mistake. )