Delfin
Grand Vizier
- Joined
- Jan 20, 2010
- Messages
- 3,850
Saw this vessel at the dock today. I was told it was built at Nanaimo boatyards in B.C. She appears to be all aluminum, around 60'.
She has an aluminum striker plate for the Forfjord anchor, and it looked to be welded onto the hull. I wonder if the registry is correct as to the steel construction, but I assume so, and I haven't seen anything like that before. I'll take my magnet over......
Do you know how they affixed the aluminum to the bow? Perhaps just 5200, but I thought I saw weld lines. I remember now seeing the m/v Pacific in Friday Harbor and talking to the owner about the addition of 12' just forward of the bridge. Sounded expensive.She was built by a guy that lived in Port Townsend for a bunch of years, he also had the concession for the fuel dock here. Bill built a number of those hulls, and a few of different design .. one I know he was commissioned to build was a Roberts 43 trawler. He built one in about a year, then he ran it down to Cabo.. out to the Marquesas.. up to hawaii... and back to Port Townsend in seven months for a shake down cruise. There is a sister ship to this one ( Mv. Pacific ) that the P.T Shipwrights added about 12' to the foredeck and dumped a literal boat load of cash into a few years ago. Another of his boats was involved in a covered marina fire years ago on Lake Union and was pretty trashed.. It ended up back here in P.T. as a bare hull that needed a complete new deck, house and everything else. It had a big Cat in it... it sold for about 3 grand and was scrapped... I really looked hard at a complete rebuild of the hull ... but I had a moment of enlightenment and ran the opposite direction. To my knowledge all his hulls were steel.
HOLLYWOOD
.... about fwd slanted pilothouse windows this one would look less like a toy w windows more vertical.
During a momentary lapse of reason, we crossed Nahwitti Bar at the north end of Vancouver Island into the Pacific after the ebb had turned by about 10 minutes. We quickly went from glass smooth to dealing with some stunningly tall waves of very short period. We took one wave completely over Delfin, and I was grateful that her pilot house windows were raked back rather than forward. I think the pressure on them would have been quite a lot greater if they were raked forward, but it's hard to know for sure.When your wheelhouse windows are so far aft, forward raking is not so much for seakeeping safety but more so for being able to oversee a working weatherdeck.
If she is not a working boat, and the wheelhouse is so far aft, raking the windscreen backwards in yacht fashion is quite acceptable.
If you have to worry about boarding seas damage impacting on a properly gauged and well framed tempered glass windshield that far aft, you are way beyond a 60' vessel's seakeeping ability and it is time to ready the liferafts.....
..... and I was grateful that her pilot house windows were raked back rather than forward. I think the pressure on them would have been quite a lot greater if they were raked forward, but it's hard to know for sure.
Thank you Capt. I was not aware that the overhang was a specific design feature, but what you say makes sense.You have that overhanging brow of your wheelhouse deckhead too.
Much like in many cases of flybridge boats as well, the bridge brow overhangs forward.
Many people don't realize, but the over hanging brow is designed to break the falling waves in a horizontal axis, therefore dissipating their pressure on the windshield. Given the correct gauging of glass and structurally appropriate framing, most vertical or near vertical windshields can withstand an awful lot of pressure. The 44 motor lifeboat in my post is a perfect example; she was meant to be knocked down and recover.
Come to think of it, overhang is fairly common. Like the Coot, the 60-foot, diesel-electric Keliautojas has a generous overhang.
Perhaps I missed the point, but I believe he was referring to the overhang below the pilot house windows, which would absorb much of the energy of a deck sweeping wave hitting the pilot house. The eyebrow above the windows is certainly common, if not universal.Come to think of it, overhang is fairly common. Like the Coot, the 60-foot, diesel-electric Keliautojas has a generous overhang.
Come to think of it, overhang is fairly common. Like the Coot, the 60-foot, diesel-electric Keliautojas has a generous overhang.
Perhaps I missed the point, but I believe he was referring to the overhang below the pilot house windows, which would absorb much of the energy of a deck sweeping wave hitting the pilot house. The eyebrow above the windows is certainly common, if not universal.
Her transom is pretty high (please excuse the finger in the foreground).
manyboats said:Re Marin's feelings about fwd slanted pilothouse windows this one would look less like a toy w windows more vertical. But if you're running downwind in the rain those windows may stay almost dry. So may my windows on Willy. Delfin's windows look really right to me.
As noted, I hadn't thought of the impact on deck waves of the overhang below the pilot house, and perhaps that is not what Joe was referring to, but the lower overhang is a feature of North Sea boats, and is presumably there for a reason. Waves would expend a great deal of their force hitting that overhang before coming in contact with the pilot house glass, while the eyebrow would tend to increase the pressure. It seems that the lower overhang is superior to a Portuguese bridge, which would seem to funnel the wave onto the glass. Below are some pictures showing this feature in North Sea boats. The first two are Malahides. Incidentally, the fourth picture of Neptunus Rex is the before picture for a truly spectacular restoration that transformed this Romsdal to the third picture of the Discovery.Yes. Captain Joe was referring to the overhang above the pilothouse windows, not below the windows. Flying bridges are above the pilothouse.
As noted, I hadn't thought of the impact on deck waves of the overhang below the pilot house, and perhaps that is not what Joe was referring to, but the lower overhang is a feature of North Sea boats, and is presumably there for a reason. Waves would expend a great deal of their force hitting that overhang before coming in contact with the pilot house glass, while the eyebrow would tend to increase the pressure.