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PX10-PX12
These patrol boats are of the design represented by the Dave Metcalfe design of PX11, Sangsetia.
Photographs of PX11 Sangsetia are hard to come by. The only one I have found is in "Combat fleets of the world. 1976-1977" which is available on online, showing PX11 alongside PX10 in 1975:
https://babel.hathitrust.org/cgi/pt?id=mdp.39015013034221;view=1up;seq=288The wheelhouse of PX12 is shown in this photograph from 1978:
http://my1foto.penerangan.gov.my/stock-photo/lawatan-sultan-selangor-dymm-sultan-salahuddin-abdul-aziz-shah-ibni-almarhum-sultan-hisamuddin-alam-shah-ke-kuala-selangor-selangor-187402.htmlPlus there is the photograph of the model of PX12 shown in the first post.
Fortunately, there are lot of photographs of PX10 Shabandar on Facebook:
https://www.facebook.com/photo.php?fbid=322127911256757&set=a.322127881256760.1073741833.100003786538221&type=1&opaqueCursor=AbpU4_GXpawbzOmpCpDt8J2pkTp66zgF0_HgDnADn1uIdLQMaok1Bg2T-JtOjFECxieh_TI3JC-7d3RdOeBKpnNkxN24OgwflVavnrYxnGdIX10vKdG1SBu3sRef6VQeuj71s1JSbOfCSP9WmCcWUshoIxyAHUbhuyrAOuC-vzsJMhHznMOzdQH4TgmcvVb6j7IlKImP8pDv74L4C3vvLZGx4Jg_Yq_HGFwBgIi7CvezFyfhWqcnb_LENtYNV6boc6gGN9TfosfY8m_r_5-LfKvuYXa3YQwbmOoO53eCRbbdnO96sEYA_6IbdJXgKuQPazJiZM_JLG6kxXInT9xU3tZur7xViVHgLeEtPb3WnK6_fkOjbmbRGOt3TAlaLiCTsOPImosCwxW-EnItwbTz16OMLBQnLN4SUGpPllcwwwA07dp5Y8qmeVFJeo1dE9tNX1N620VHVWaKGVwW5W1o5qmUULNgZxs9xzrn7jMUs0qelnkc2eBMH6uezPlsdiUYVOHkyAgYJLdjTJjD6lL4n_zM&theaterhttps://www.facebook.com/roslan.shaffei/media_set?set=a.130533086976923.15626.100000606970561&type=3https://www.facebook.com/mohdjani.amit/media_set?set=a.174400302600096.35033.100000903825172&type=3The last link has dozens of fascinating photos of PX10 from 2010, during a training course for marine police divers. There are useful side views of PX10 from a distance, and many close ups of the wheelhouse, hull and deck at the stern that would allow an accurate model of PX10 to be made. Note that if you scroll down from the first batch of pictures of the boat past photos of the divers, there are more photos on board on the rear deck.
These photos of PX10 and 12 and photos of other members of the PX class show quite a few differences from the Sangsetia plan. Perhaps Sangsetia was a one off in some ways? Differences include:
1. The ship's boat is not at the stern on the port side, as in the plan, but behind the wheelhouse, as with other members of the class.
2. There are life-rafts either side at the stern, not just one side.
3. The positions of the awning supports, fairleads and bollards are different from in the plan.
4. The porthole positions are different (and actually quite consistent across PX1-15). There are ten portholes on the starboard side and nine on the port side (one less at the stern).
5. There are no mushroom vents on the wheelhouse roof either side of the upper bridge, or swan-neck vents in the deck either side of the wheelhouse.
6. There are circular hatches on both the front and rear decks.
7. The wheelhouse windows do not appear to be recessed, although perhaps they were originally.
8. The wheelhouse windows have rounded corners.
9. The projections either side of the wheelhouse rear are curved in an S shape rather than having straight edges (this is the case for all PX boats in the range PX10-PX18 that I have seen).
10. The radar mast is made of an open tubular structure, not solid, and is behind the wheelhouse rather than on the wheelhouse roof in both PX10 and PX12.
11. The guns appear to be Oerlikons on conical stands, not tripod stands.
12. There is a single large exhaust port either side of the hull.
13. There is no large scoop type vent on the wheelhouse side as shown in the plan, but there is a grill-type ventilator further back.
14. Scaling up sideways views, the wheelhouse on PX10 and some other boats seems to be taller than in the plan (by perhaps 0.75-1.0cm).
15. The companionway at the rear is a hatch and not the taller, curved top companionway shown in the plan. Also it is in the centre, not offset to the starboard side as in the plan.
16. I can see no evidence of a door at the back of the wheelhouse, although in most pictures this area is hard to see because of the ship's boat.
17. I have seen no images showing the filler taps that are shown either side of the wheelhouse projections in the Sangsetia plan.
18. The mooring bollards are a distinctive angled design.
19. The rubbing strakes come up much higher at the bow than shown in the plan.
As a say, perhaps PX11 had detail differences. But in the article that accompanied the plan when first published, Dave Metcalfe did say that the plan was drawn from a very small plan in a book and a small photograph, so might have involved a bit of interpretation.
But the hull seems to be accurate and would allow a model to be made using the details from these photos.